Impossible to answer without a serial number.
1974
Impossible to tell without a picture, serial number, caliber, barrel length, and type of action. Or look for the model:D
Ruger's web site has sn data.
impossible to answer without the name of the maker
No published serial number data.
31 years old
58 years old.
1935
1973
1956
Pistol made in Belgium
It's in your military records, or you can go to AKO, or contact the recruitment office that took you to MEPPS.