Rifle N proof
 

Here are some assorted proofs from my black-gripped '29. Under the trigger plate are 2 letters, capital O's and another captial O on the cannon right in front of the extractor. There are a few other O's on the cannon in various places. The "rifle" proof with the N is interesting. It is located on the back of the cannon and also inside the grip frame. The numeral 4 appears in various areas, too. The S&Co logo is intersesting. The O surrrouded by a C is in a couple of places. Swiss sure like to stamp!

Jim

Hi Jim,

Could you indicate the year your gun was made or serial number such as # 754xx ???

1. The Rifle N proof mark is that of the subcontracting firm, SIG Neuhausen.

2. The various Letter/Circle stampings are of various Swiss parts inspectors...which could be either federal inspectors or civilian contractor inspectors.

3. The CN+ stamping denotes some use of an alloy in the part.

4. I do not know what the "S&Co" stamping is...sorry.

Hi, Pete-

So, a SIG built luger? Had no idea such a thing exsisted. The SN is 679xx. The S&CO log is on the grip panel, along with the usual WF+ logo. What was the purpose of the alloy, strength, weight?

Regards-

Jim

Jim,

SIG was only a supplier/subcontractor for some of the Swiss luger parts.

I do not know what steel alloys were used, but have heard cadmium and valadium were some of the steel/alloy blends.

Pete,
I believe the CN+ indicates chrome nickel steel was used for the stamped part. CV+ would indicate chrome vanadium alloy was used. This is the explanation I got for the same stamps on wartime K31 bolt parts, so I would assume it applies to pistols as well.

George

Thanks, George...

I did not pay much attention to metallurgy in college...