Exhibit 4.2


 





	NUMBER
	 	SHARES





	 	 	 
	WTMAC
	 	CUSIP 950415 109








 





WELSBACH TECHNOLOGY METALS ACQUISITION CORP.


INCORPORATED UNDER THE LAWS OF THE STATE OF
DELAWARE


COMMON STOCK


 


SEE REVERSE FOR


CERTAIN DEFINITIONS


This Certifies that


is the owner of


 


FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR
VALUE OF $0.0001 EACH


OF THE COMMON STOCK OF


 


WELSBACH TECHNOLOGY METALS ACQUISITION CORP.


 


transferable on the books of Welsbach Technology
Metals Acquisition Corp., a Delaware corporation (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 an initial business combination
within the period of time as set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be
amended from time to time (the “Charter”), 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 facsimile seal
of the Corporation and the facsimile signatures of its duly authorized officers.


 





Dated:


 


	 	 	 
	CHAIRMAN	[INSERT SEAL HERE]	CHIEF EXECUTIVE OFFICER



 


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
	 	 	 
	TEN ENT	       —       	as tenants by the entireties
	 	 	 
	JT TEN	       —       	as joint tenants with right of survivorship and not as tenants in common



 





	UNIF GIFT MIN ACT              —		Custodian 	
	 	(Cust)	(Minor)


 


	 	under Uniform Gifts to Minors Act
	 	(State)
	 	 	 



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

 



     


     


    

 


Welsbach Technology Metals 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 Corporation’s Amended and Restated Certificate of Incorporation and all amendments thereto and resolutions of the Board of
Directors providing for the issue of shares of Common 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(s) of this certificate shall be entitled to receive a pro-rata
portion of the funds from the trust account only in the event that (i) the Corporation is forced to liquidate because it does not consummate
an initial business combination within the period of time set forth in the Corporation’s Charter or (ii) if the holder seeks to
convert his shares upon consummation of, or sell his shares in a tender offer in connection with, an initial business combination or in
connection with certain amendments to the Charter. In no other circumstances shall the holder(s) have any right or interest of any kind
in or to the trust account.