drduc,

Good looking hammer double. Hunting quail with it sounds like a lot of fun, Waidmannsheil!

I'm no expert but the cuts of the engraving on your gun and Vic's (sharps4590) are so similar that to me it is very likely that they were done by the same engraver. Hendrik Frühauf - http://www.gebrueder-fruehauf.de/ - is quite the expert on these things and may be able to tell you should you two collaborate and send pictures to him.

Regards,

Mark