Ah ha. I knew I'd seen that somewhere once you mentioned commercial trademarks:
Apologies for the image quality, they're very faint and hard to photograph.
Left side of the stock:
Bottom of the stock south of the rear sling swivel:
Wrist area:
Do you happen to know if those commercial rifles shipped without the QD sling mount? This rifle came with a normal rear sling swivel installed. I just assumed that the original was lost over time and someone along the way replaced it with something off a Gew98 or similar.
As an aside, if this is a commercial rifle it seems odd that they would be manufacturing these for non-military contracts as early as 1890. Everything I've read says that that early on the Germans were trying to keep these guns at least somewhat under wraps and were pulling out all the stops to get as many units manufactured for the Army as possible. It seems odd that they would OK commercial sales of their new, top secret infantry rifle in the first place, and also odd that the Army wouldn't be sucking up all production available filing their own orders.
edit: another question: Did they make commercial guns in a full military configuration? The commercial guns I'm familiar with are the sporters like the Haenel rifles.