The primary serial # is stamped on the barrel of the gun opposite the cartrige ejection port
50-100 USD or so
About $100 if in working order. These were made by Crescent Firearms Mfg. BTW, the letters CTGE means CARTRIDGE.
about 1951
about 1948
about 1948
About 1948 or 1949.
about 1946
50-100 USD
1952-53
500 USD
No sn=no answer.
about 1948