Vinss

Hi there, I've got what seems to be some old TM11-A paintball marker. I've checked it out on google and there are many different pictures of diffrent markers that result when I do an image search. The only stuff written on the gun is:

A. T. C. I.
FT WAYNE, IN

and

TM11-A

Anyone know hom much this type of gun is worth? It's in fairly good condition, still works, missing the safe though. Thanks.