JDW, I see the Glahn signature, but I cannot see a J. Is it marked with the first name ? There were other Glahns. I have an A2 Smith marked Sc. Glahn for Scribed by Glahn or something similar. No first name or initial.

Another thought, many guns in England had multiple engravers, so it's possible American guns could have too. That may be a reason you are wondering about the dogs being J. Glahn's work.

http://www.bakercollectors.com/