In an effort to provoke Michael Petrov to tell us more about the guns made by Heym, particularly the guns in the 6xxx serial number range I have borrowed his picture and taken a couple of my own.
Michael Petrovs
Charles Daly (Heym)
My "Guild Gun" marked
Mossiers - Gabriel Breslau on the rib. Mine is s/n 6116. A BLE weighing 6 1/4 lbs. with 30" barrels. Original 2 3/4" chambers per the proofs. Proofed in Aug. 1933.

Yes that is a "K" you see carved in the stock. Someone took a pocket knife and carved the name "Klimpke" into the wood. I had planned on having it repaired but so far it has not affected the shooting of the gun.
Apologies for the push Michael, but I really want to read what you have found.
Thanks,