I purchased a SNES cart with no label on it for fun a couple weeks ago.  It turned out the game was Capcom's Final Fight.  When I mentioned my little find on NA, someone suggested that it may be a proto if there was no residue where the front and back label should be (and it doesn't).  I have opened the cart, but I have no idea what to look for to determine if it is a proto.  What do you guys think?

From the looks of it? No way. The PCB is a production board, and the chips are mask roms. All signs point to a normal retail release.

For a prototype you typically want to look for a different looking pcb (long board, jumpers, etc), and EPROMs instead of production roms. Those two things are common place on prototypes.

unfortunately Matt is right, a snes prototype would look more like this
http://www.snescentral.com/pcbboa... thats the same board that my NFL football prototype is on. here is a list of alot of different SNES PCB's including the one you have pictured
http://www.snescentral.com/system...
(thank you SNES Central)

maybe its a not for resale version of final fight and somebody just tore the label off

definately not a proto, it's a production rom chip

Production version of the game, made on the 31st week of 1991 (ie August 1991). This pcb board is most likely from the initial release bunch of Final Fight, but it certainly is not a prototype.

Thanks all for the feedback...not exactly the answer I was looking for but it was the one I expected.

They could have lied..were you not looking for the truth, because that's what you got.