A Tiny Pistol - Erika 4.25mm (1910s) ( lemmy.world )
This is the Erika, developed by Franz Pfannl and chambered for the 4.25mm Liliput cartridge (which develops approximately 1/4 the energy of the .25 ACP)....
This is the Erika, developed by Franz Pfannl and chambered for the 4.25mm Liliput cartridge (which develops approximately 1/4 the energy of the .25 ACP)....