I inherited a 38 S&W Special CTG nickel with mixture of light and dark plastic(?) grip. 4" barrel, 6 slot revolver chamber. Serial # inside by ejector is 51656 with a "Q" above and to the right of it. The serial # on the base of the handle has been filed or chiseled off. My father was in WWII, but he may have inherited it from my uncle who was also in WWII, Korea and head of Procurement for Pentagon around late '60's to '70's. my grandfather was in WWI. Don't know who owned it. Any help on the age and the type of 38 ammo I should use would be appreciated.