Whoever shall secrete, sell, dispose of, offer for sale, or in any manner pawn or pledge, or receive in pawn or pledge, buy, or intentionally fail to return after having been legally discharged from the National Guard any of the arms, uniforms, or equipments, being the property of the United States or of the Commonwealth, knowing or having reason to believe the same to be the property of the United States or the Commonwealth, shall be deemed guilty of a misdemeanor, and shall, on conviction thereof, be imprisoned in jail for not less than six months nor more than one year, or in the discretion of the jury or judge, be fined not less than $50 nor more than $1,000.