WW2 German leather K98 Bayonet Frog. Unsure if frog is for a fireman or other civic branch bayonet. It is WW2 period., same stitching placement as other WW2 German bayonet frogs I have. There is another hole for a different frog stud. No visible markings stamped that I can discern. Can still be used on your original bayonet. I’ll be happy to answer any questions you may have.