Makers Mark: “G.P.H”.
This mark is all indented and the letters are found within a circle. The G and P are side by side with the H centered underneath. Although unconfirmed, it is speculated that this is the manufacturer – Gustav Hähl from Pforzheim. This makers mark is often unclear and can be rough and blurry causing people to speculate the letters may be something else such as GPM, GAH or GHH.
Known works: