Document:

NUMBER

            	 	
              UNITS

            
	
              U-_________________

            	 	 
	
              SEE
                REVERSE FOR CERTAIN DEFINITIONS

            	
              COLUMBUS
                ACQUISITION CORP.

            	 
	 	 	
              CUSIP__________

            

    

    

    UNITS
      CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT TO PURCHASE ONE SHARE
      OF
      COMMON STOCK 

     

    

     

    THIS
      CERTIFIES THAT
 ___________________________________________________________________________________

    is
      the
      owner of 
 __________________________________________________________________________________________

    Units.

     

    Each
      Unit
      (“Unit”) consists of one (1) share of common stock, par value $.0001 per share
      (“Common Stock”), of Columbus Acquisition Corp., a Delaware corporation (the
“Company”), and one warrant (the “Warrant”). The Warrant entitles the holder to
      purchase one (1) share of Common Stock for $6.00 per share (subject to
      adjustment). The Warrant will become exercisable on the later of (i) the
      Company’s completion of a merger, capital stock exchange, asset acquisition or
      other similar business combination and (ii)             ,
      2008,
      and will expire unless exercised before 5:00 p.m., New York City Time, on
            ,
      2011,
      or earlier upon redemption (the “Expiration Date”). The Common Stock and
      Warrants constituting the Units represented by this certificate are not
      transferable separately prior to             ,
      2007,
      subject to earlier separation in the discretion of Ladenburg Thalmann & Co.
      Inc. The terms of the Warrants are governed by a Warrant Agreement, dated as
      of
            ,
      2007,
      between the Company and Continental Stock Transfer & Trust Company, as
      Warrant Agent, and are subject to the terms and provisions contained therein,
      all of which terms and provisions the holder of this certificate consents to
      by
      acceptance hereof. Copies of the Warrant Agreement are on file at the office
      of
      the Warrant Agent at 17 Battery Place, New York, New York 10004, and are
      available to any Warrant holder on written request and without
      cost.

     

    This
      certificate is not valid unless countersigned by the Transfer Agent and
      Registrar of the Company.

     

    WITNESS
      the facsimile seal of the Company and the facsimile signatures of its duly
      authorized officers.

     

    COLUMBUS
      ACQUISITION CORP.

    CORPORATE

    SEAL

    DELAWARE

     

    
      	 	 	 	 
	
              CHIEF
                EXECUTIVE OFFICER

            	 	 	
              SECRETARY

            

    

    

     

    Countersigned:

     

    
      	 	 
	
              Transfer
                Agent and Registrar

            	 

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    Columbus
      Acquisition Corp.

     

    The
      Company will furnish without charge to each stockholder who so requests, a
      statement of the powers, designations, preferences and relative, participating,
      optional or other special rights of each class of stock or series thereof of
      the
      Company and the qualifications, limitations, or restrictions of such preferences
      and/or rights.

     

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

     

    
      	
              TEN
                COM - as tenants in common

            	
              UNIF
                GIFT MIN ACT - _____ 
                Custodian ______

            
	
              TEN
                ENT - as tenants by the entireties

            	
                                                       
                (Cust)                     
                (Minor)

            
	
              JT
                TEN - as joint tenants with right of survivorship 

            	
              under
                Uniform Gifts to Minors

            
	
              and
                not astenants in common 

            	
              Act
                ________  

            
	 	
              (State)

            

    

    

    Additional
      Abbreviations may also be used though not in the above list.

     

    For
      value received, ____________________  
      hereby sell, assign and transfer unto

     

    
      	
              PLEASE
                INSERT SOCIAL SECURITY OR 

              OTHER
                IDENTIFYING NUMBER OF ASSIGNEE

            	 
	 	 

    

    

    
       

    

    
      	 
	
              (PLEASE
                PRINT OR TYPEWRITE NAME AND ADDRESS,
                INCLUDING ZIP CODE, OF ASSIGNEE)

            
	 

    

    
      	 	Units represented
              by the within Certificate, and do hereby irrevocably constitute and
              appoint
	 	 
	Attorney to transfer
              the said
              Units on the books of the within named Company will full power of
              substitution in the premises.

    

     

     

    Dated
      _________________

     

    
      	 	 	 
	 	Notice:	
              The
                signature to this assignment must correspond with the name as written
                upon
                the face of the certificate in every particular, without alteration
                or
                enlargement or any change whatever.

            

    

    

    Signature(s)
      Guaranteed:

     

    
      	 
	
              THE
                SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
                (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
                WITH
                MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
                PURSUANT
                TO S.E.C. RULE 17Ad-15).NUMBER

            	
              SHARES  

            
	_________	
              C

            	 
	 	 

    

    COLUMBUS
      ACQUISITION CORP.

     

    

     

    INCORPORATED
      UNDER THE LAWS OF THE STATE OF DELAWARE

     

    

     

    COMMON
      STOCK

     

    
      	 	 	
              SEE
                REVERSE FOR 

              CERTAIN
                DEFINITIONS

            
	 	 	 
	
              This
                Certifies that 

            	
              CUSIP
                __________ 

            
	 	 	 
	
              is
                the owner of

            	 
	 	 	 

    

    FULLY
      PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $.0001

     

    EACH
      OF THE COMMON STOCK OF

     

    

     

    COLUMBUS
      ACQUISITION CORP.

     

    transferable
      on the books of the Corporation in person or by duly authorized attorney upon
      surrender of this certificate properly endorsed. The Corporation will be forced
      to liquidate if it is unable to complete a business combination within 24 months
      from the consummation of its initial public offering, all as more fully
      described in the Corporation’s final prospectus dated   ,
      2007.
      This certificate is not valid unless countersigned by the Transfer Agent and
      registered by the Registrar.

     

    WITNESS
      the facsimile seal of the Corporation and the facsimile signatures of its duly
      authorized officers.

     

    
      	
              Dated:

              Columbus
                Acquisition Corp.

            	 
	
              Corporate

              Seal

              Delaware

            

    

     

    
      	 	 
	 	 	 
	
              CHIEF
                EXECUTIVE OFFICER

            	 	
              SECRETARY

            
	
               

              Countersigned:

            	 	 
	 
	
              Transfer
                Agent and Registrar

            

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

     

    
      	 	
              TEN
                COM

            	
              -

            	
              as
                tenants in common

            	 	
              UNIF
                GIFT MIN ACT -                 
                Custodian                 

            
	 	
              TEN
                ENT

            	
              -

            	
              as
                tenants by the entireties

            	 	 	
              (Cust)

            	 (Minor)
	 	
              JT
                TEN

            	
              -

            	
              as
                joint tenants with right of survivorship and not as tenants in
                common

            	 	
              under
                Uniform Gifts to Minors

              Act
                                

            
	 	 	 	 	 	 	
              (State)

            	 
	 	 	 	 	 	 

    

    Additional
      Abbreviations may also be used though not in the above list.

     

    Columbus
      Acquisition Corp.

     

    The
      Corporation will furnish without charge to each stockholder who so requests
      the
      powers, designations, preferences and relative, participating, optional or
      other
      special rights of each class of stock or series thereof of the Corporation
      and
      the qualifications, limitations, or restrictions of such preferences and/or
      rights. This certificate and the shares represented thereby are issued and
      shall
      be held subject to all the provisions of the Certificate of Incorporation and
      all amendments thereto and resolutions of the Board of Directors providing
      for
      the issue of shares of Preferred Stock (copies of which may be obtained from
      the
      secretary of the Corporation), to all of which the holder of this certificate
      by
      acceptance hereof assents.

     

    For
      value received,                                                     
      hereby sell, assign and transfer unto

     

    
      	
              PLEASE
                INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF
                ASSIGNEE

            	 
	 	 
	 	 
	 	 

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
 

    
      	_______________________________________________________________________________________________________
	
              (PLEASE
                PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF
                ASSIGNEE)

            
	
              _______________________________________________________________________________________________________

              _____________shares
                of the capital stock represented by the within Certificate, and do
                hereby
                irrevocably constitute and appoint

            
	
               

            
	
              __________________Attorney
                to transfer the said stock on the books of the within named Corporation
                will full power of substitution in the premises.

            
	 
	
              Dated
                _____________  

            	 	_________________________________________
	 	 	
              Notice:

            	
              The
                signature to this assignment must correspond with the name as written
                upon
                the face of the certificate in every particular, without alteration
                or
                enlargement or any change whatever.

            
	
              Signature(s)
                Guaranteed:

            
	 	 
	___________________________________________________	 
	
              THE
                SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
                (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
                WITH
                MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
                PURSUANT
                TO S.E.C. RULE 17Ad-15).

            	 
	 

    

    The
      holder of this certificate shall be entitled to receive funds from the trust
      fund only in the event of the Company’s liquidation upon failure to consummate a
      business combination or if the holder seeks to convert his respective shares
      into cash upon a business combination which he voted against and which is
      actually completed by the Company. In no other circumstances shall the holder
      have any right or interest of any kind in or to the trust fund.

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