The only Iver Johnson Model 50 is a .22 revolver. The only Iver Johnson 9mm Parabellum (Luger) is an M1 carbine sold in the mid 1980's. IJ did sell the Pony which is chambered for .380 ACP (also called 9mm Kurtz, 9mm Corto, and 9mm Browning short).
Check the receiver and barrel
value of smith & Wesson model 5906 pistol
What model?
A Colt Lightweight Officer's Model in .45ACP caliber. It is small and light and carries seven rounds.
Your Iver Johnson Target model 55 was made from 1955-1960.
If I am right the pistol was made by By Crosman for Sears under the JC Higgins name. It's a Crosman model 600. 22 Cal C02 pistol. Made between 1960 and 1970. Value is determined by the current condition. Without more information about the working and current condition it is not possible to set a value.
a good qualified gunsmith should be able to answer your question for you.
Kel-Tec manufactures a Model PMR-30 Semi-Auto pistol chambered for a .22 Magnum cartridge (.22WMR) with a 30 round clip capacity.
The original manufacture of the Iver Johnson Model 55 Target pistol maybe able to provide an owners manual. The manual will have instructions on what is need to maintain the product.
More information is needed to identify the manufacturer of this pistol.
model 1903 hammerless .32
please provide the model information