This is an exceptionally rare Mauser M1906-08 self-loading pistol with a 20-round magazine, serial number 51. It is chambered in caliber 9x21mm (DWM case 487B). Mauser made fewer than 100 such pistols, with the highest recorded number believed to be number 77.
The M1941 Johnson Rifle was an American short-recoil operated semi-automatic rifle designed by Melvin Johnson prior to World War II. The M1941 competed unsuccessfully with the U.S. M1 Garand rifle, though it was manufactured and issued in limited numbers to U.S. forces.