Here's the marks between the flats and the forend lug for Geyger #1454. Looks like the Louis Kelber mark of a "K" in a jagged circle, a script "M" near the forend lug and a script "E.W.". I wonder what the line across the "Krupp Stahl"(??) on the underside of the left tube might be as well as why it was finished that way?

Kind Regards,

Raimey
rse