Exhibit 4.2

    

    

    SPECIMEN CLASS A COMMON STOCK CERTIFICATE

    

    

    	NUMBER	
            NUMBER

          


    C-

    SHARES

    SEE REVERSE FOR CERTAIN

    DEFINITIONS

    	

          	
            CUSIP ________

          


    

    

    MERCURY ECOMMERCE ACQUISITION CORP.

    

    

    INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

    CLASS A COMMON STOCK

    

    

    This Certifies that                              is the owner of

    

    

    FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE CLASS A COMMON STOCK OF

    

    

    MERCURY ECOMMERCE ACQUISITION CORP.

    (THE “CORPORATION”)

    

    

    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 redeem all of its shares of Class A common stock if it is unable to complete a business combination by               , 2022, with an automatic six-month extension if the Corporation
      has signed a definitive agreement with respect to an initial business combination (or by              , 2023 if extended by the Corporation in accordance with the Corporation’s amended and restated certificate of incorporation and investment
      management trust agreement with Continental Stock Transfer & Trust Company to consummate a business combination), all as more fully described in the Corporation’s final prospectus dated            2021.

    

    

    This certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar.  Witness the seal of the Corporation and the facsimile signatures of its duly authorized officers.

    

    

    	Chief Executive Officer	
            [Corporate Seal]

          


    Delaware

    
      
        


    

    
    

    

    MERCURY ECOMMERCE 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 securities (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.  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

          	
            — as tenants in common

          	
            UNIF GIFT MIN ACT —

          	
            Custodian

          
	
            COM

          	  	 	 	 	 
	
            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.

    

    

    For value received,                hereby sells, assigns and transfers unto

    

    

    (PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))

    

    

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

    

    

    Shares of the capital stock represented by the within Certificate, and hereby irrevocably constitutes and appoints

    

    

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

    

    

    	
            Dated:

          
	 
	 
	 
	
            NOTICE:  THE SIGNATURE(S) 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:

          
	
            By

          
	 
	 
	 
	
            THE SIGNATURE(S) MUST 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 (OR ANY SUCCESSOR RULE).

          


    
      2

      
        


    

    

    

    In each case, as more fully described in the Corporation’s final prospectus dated                   , 2021, the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds held in the
      trust account established in connection with its initial public offering only in the event that (i) the Corporation redeems the shares of Class A common stock sold in the Company’s initial public offering and liquidates because it does not consummate
      an initial business combination by               , 2023, with an automatic six-month extension if the Corporation has signed a definitive agreement with respect to an initial business combination (or by              , 2023 if extended by the
      Corporation in accordance with the Corporation’s amended and restated certificate of incorporation and investment management trust agreement with Continental Stock Transfer & Trust Company to consummate a business combination (ii) the Corporation
      redeems the shares of Class A common stock sold in its initial public offering in connection with a stockholder vote to amend the Corporation’s amended and restated certificate of incorporation to modify the substance or timing of the Corporation’s
      obligation to redeem 100% of the Class A common stock if it does not consummate an initial business combination by               , 2023, with an automatic six-month extension if the Corporation has signed a definitive agreement with respect to an
      initial business combination (or by              , 2023 if extended by the Corporation in accordance with the Corporation’s amended and restated certificate of incorporation and investment management trust agreement with Continental Stock Transfer
      & Trust Company to consummate a business combination, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of Class A common stock in connection with a tender offer (or proxy solicitation, solely in the event the
      Corporation seeks stockholder approval of the proposed initial business combination) setting forth the details of a proposed initial business combination.  In no other circumstances shall the holder(s) have any right or interest of any kind in or to
      the trust account. 

     

    

  

  3