James:
Can you give us a detailed description of what and where the areas which lack blueing might be? I wouldn't reblue them and I think Mr. Baumgarten made a mistake by removing the blueing but time will tell. With the position of the pin in the forend iron, I'd guess the ejectors were of the H & H(Holland & Holland) variety being Patent No. 800 of 1893. A pic of the forend iron might aide in the determination.

There looks to be a "C" closer to the rib adjacent to the "Eagle" "Crown" over "S" on the underside of the right tube. I've pondered the puzzle off and on today and hoped that Felix would set us on the straight and narrow as I really have a difficult time believing that the longarm was sourced from Suhl as it has all the hallmarks, including the Purdey nose & sculpted baskül or fences, of a Weipert sourced longarm with the components from Wenzel Morgenstern who may have subcontracted the work to the firm Nobert Schmidl with Josef Hoffman the elder with his son Josef Hoffman the younger at the helm by the time the Germans were in control of the Weipert proofhouse facility. Wenzel Morgenstern's serial number sequence would have been in the 6000 range during WWI. Is there any such serial number on the forend? The lack of preliminary Weipert stamps along with the full monty of 1912-1923 Suhl stamps makes for quite the puzzle. Also were there any stamps on the mechanism side of the locks?

Kind Regards,

Raimey
rse