Always delighted to have the info Hause as I am sure they were using similar, if not the same pulver.

But the marks which we are discussing are voluntary proofmarks that are above & beyond the provisional proof and warranted an additional fee. These voluntary marks note an proof effort that was an attempt to stay abreast with the changing times as it was difficult to make changes in the proof rules often.

Serbus,

Raimey
rse