how do you spot a conversion

i got my copy of MSX jap homecart today and i happened to notice when looking at the game boards at the bottom of the cart one board is grey and one board is light green (all my other home carts have 2 grey boards)

i dont think theres anything dodgy about it but im just checking so any help would be great

cheers

MKL said:

http://www.neo-geo.com/forums/showthread.php?s=&threadid=2386&highlight=metal+slug+X+grey+green

Click to expand...

cheers for that guy

i must say i am relieved