The company existed with that name from 1871 to 1987. A great source of information on Iver Johnson Firearms is the book by W.E. Goforth titled, "Iver-Johnson Arms & Cycle Works Firearms 1871-1993".
I can say that the Iver johnson target model small frame(,22cal)was made from 1925-1928.The iver johnson target large frame(.22cal)was made from 1921-1941.
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The Iver Johnson .22cal supershot automatic model 90 witch you describe was made by Iver Johnson between the years 1932-1941.
They do not make a nine shot pistol made by Iver Johnson. These pistols were available in the 1940s.
Iver Johnson made many different firearms. Serial 24474 is one of them.
The Iver Johnson "Cattleman" series was made by A. Uberti in Italy then imported and sold by Iver Johnson. In good shape, around $350.
Your Iver Johnson Target model 55 was made from 1955-1960.
Yes Iver Johnson did make 410 shot guns, I own 2 break open 410 shot guns both made by Iver Johnson.
The iver johnson cadet 55sa was made during the years 1961-1978.
Mine was made in 1928 when was your made?
I am pretty sure the Wards Westernfield Model 53 was made by Iver Johnson. Externally the Model 53 and Iver Johnson Hercules look identical. I believe the Iver Johnson Hercules was made from 1918 to 1936.
I can only say that the Iver Johnson model 57A target was made from 1955-1975.