SERIES A UNITS CONSISTING OF TWO SHARES OF COMMON STOCK, FIVE CLASS WWARRANTS EACH TO PURCHASE ONE SHARE OF COMMON STOCK AND FIVE CLASS Z WARRANTS EACH TO PURCHASE ONE SHARE OF COMMON STOCK

Exhibit 4.1

CUSIP                                 

SERIES A UNITS CONSISTING OF TWO SHARES OF COMMON STOCK, FIVE CLASS W WARRANTS EACH TO PURCHASE ONE SHARE OF COMMON STOCK AND FIVE CLASS Z WARRANTS EACH TO PURCHASE ONE SHARE OF COMMON STOCK

Each Series A Unit (“Series A Unit”) consists of two (2) shares of common stock, par value $.0001 per share (“Common Stock”), of Mercator Partners Acquisition Corp. Inc., a Delaware corporation (the “Company”), five (5) Class W Warrants (the “Class W Warrants”) and five (5) Class Z Warrants (the “Class Z Warrants”). Each Class W Warrant and Class Z Warrant entitles the holder to purchase one (1) share of Common Stock for $5.00 per share (subject to adjustment). Each Class W Warrant and Class Z Warrant will become exercisable on the later of (a) the Company’s completion of a business combination or (b) [            ], 2006. The Class W Warrants will expire unless exercised before 5:00 p.m., New York City time, on [            ], 2010, or earlier upon redemption, and the Class Z Warrants will expire unless exercised before 5:00 p.m., New York City time, on [            ], 2012, or earlier upon redemption. The Common Stock, Class W Warrants and Class Z Warrants comprising the Series A Units represented by this certificate are not transferable separately prior to [            ], 2005, subject to earlier separation in the discretion of HCFP/Brenner Securities LLC. The terms of the Class W Warrants and the Class Z Warrants are governed by a Warrant Agreement, dated as of [            ], 2005, between the Company and American Stock Transfer & Trust Company, as Warrant Agent (the “Warrant Agreement”), 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 59 Maiden Lane, New York, New York 10038, and are available to any holder of Class W Warrants and Class Z Warrants 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 signature of its duly authorized officers.

By
		President				Secretary

Mercator Partners 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:

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

For value received,                                                               hereby sell, assign and transfer unto

represented by the within Certificate, and do hereby irrevocably constitute and appoint

to transfer the said Series A Units on the books of the within named Company will full power of substitution in the premises.

Dated _______________________