My father in-law has a 12 round belt holster that he used with his utility belt and old black leather braided Billy Club. There's only 4 lead bullets in it. The brass casings have a dull finish from age with some green crud build up were it touched the leather, maybe it got wet at some point. Dont know if the rounds are as old as the gun but I wouldn't be surprised. Do you think this ammo is still good after all these years if it is from that time period. The bottoms are stamped REM UMC 38 SPECIAL. I have no idea if their collectible. Are they worth just keeping for a keepsake?