Unkleb,
The forend tip of your Daly is missing its horn insert. Dalys of this period were normally equipped with a decorative insert made of horn. Later guns featured black ebony inserts. The forend insert was a pretty standard feature of all the hammerless Prussian Dalys.
Raimey,
I have also wondered about the mechanics of executing the APUN requirement, but I don't have much insight into how it was actually done. WR obviously wanted folks to use their A&D patent to reap the financial benefits, and the gun makers were eager to use the new design. That said, it would have been cost prohibitive to set-up a station in every country. For pure volume, Leige would seem like a logical starting place to set up a station on the continent, but what about makers outside Belgium? How could a German gun maker legally make use of the patent? And was it illegal to use if it wasn't separately patented in Germany? These are great questions but I don't have any answers.
This situation was not confined to gun makers though so it would be interesting to see how it was handled in other industries with the same problem. Did a patent really need to be separately registered in every country on the continent to be effective, or was there some type of regional reciprosity?? I would be really curious how this all worked.
Cary,
There is a lot of evidence to suggest Lindner sourced his action forgings from Sauer. I am not aware though of a stamp/marking used by George Lindner. There are some other linkages between these guns and George IMO but unfortunately, a stamp, to my knowledge, is not one of them.
Ken