I just picked up this model 67-6 stainless with black rubber grips. I just found out that its called a combat master piece. I bought it not knowing any thing about it except it looked NIB has not been handled or shot much at all and they only wanted 200.00 dollars for it so i brought it home. Can any body tell me the year it was made and if i got screwed? seiral# DAR4273 67-6 THANKS for any help