In the US, you must be 21 to PURCHASE a handgun from a dealer (Federal law). Possession of a handgun is regulated by STATE law, and varies from one state to another- 18 for some, 21 for some. Without knowing which state you are in, we cannot be more specific.
21 for hand gun , 18 for long gun
Three.
You have to be 18 to buy a long gun and 21 to buy a hand gun.
Old gun catalogs
USA: 18 for Long Guns 21 for Hand Guns
In the United States, yes.
Federal law is 21
18 for long guns. 21 for hand guns.
Impossible to answer without a detailed description of ALL markings.
a hand gun
Inexpensive turn of the century hand gun. Seldom exceed 120 USD or so
Old gun catalogs and magazines