Maybe F. Surkamer Gunsmith Sta 5596 Commercial Building(1922)

http://www.dogsanddoubles.com/tag/koch/

Frederick Surkamer (1871-1936) from

"Naturally, Michael Petrov's book, "Custom Gunmakers of the 20th Century, Volume Two," continues the work started in Volume One. In these volumes Petrov presents summaries of his extensive research of prominent American gun makers from approximately 1906 to 1950, as well as some who were talented but relatively unknown. The present-day term for "Gunmaker" is, more or less, "Custom Gunsmith." Petrov presents his summaries with a plain writing style and uses a collection of excellent photographs to explain how to identify these gunmakers' work. Gun collectors will find this book a great help in identifying possible bargains and diamonds in the rough. While the value of Petrov's work to gun collectors is obvious, his biographical information in these colorful and independent characters is especially poignant. Petrov opens a window into an America that has sadly passed on. The street addresses of these gunmakers alone is enough to break the heart of any fan of Americana and American culture. One wonders what Frederick Surkamer (1871-1936) would think if he were resurrected today and attempted to walk to his old business address at Room 305, 54 West Lake Street, Chicago, Illinois. Then there was Ludwig Wundhammer (1854-1919) , who worked his trade in Los Angeles, and Seymour R. Griffin, later of Griffin & Howe, whose shop was in Hotel Bretton Hall, Broadway, 85th and 86th Street, NYC. I hope that Petrov's portrayals of a romantic and gallant part of American social history make an impression on other readers as they have on me. Sadly, Michael Petrov died in early 2014."

http://www.doublegunshop.com/forums/ubbt...&PHPSESSID=
Looks as if Petrov knew of him....

http://www.dismalriverarmory.com/merkel301esurkamer.html

Probably ordered it thru Adolph.....

Cheers,

Raimey
rse