Rifle N proof

rimfire · 02-17-2007, 01:07 PM

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

Pete Ebbink · 02-17-2007, 01:55 PM

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.

rimfire · 02-17-2007, 02:23 PM

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

Pete Ebbink · 02-17-2007, 02:44 PM

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.

Tequila53 · 02-20-2007, 08:36 PM

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

Pete Ebbink · 02-20-2007, 09:25 PM

Thanks, George...

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

02-17-2007, 01:07 PM	#1
rimfire User Join Date: Jun 2005 Location: virginia beach, va Posts: 21 Thanks: 0 Thanked 0 Times in 0 Posts	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 Attached Images

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02-17-2007, 01:55 PM	#2
Pete Ebbink User Join Date: Jun 2002 Location: The USA Posts: 5,919 Thanks: 0 Thanked 6 Times in 4 Posts	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.

02-17-2007, 02:23 PM	#3
rimfire User Join Date: Jun 2005 Location: virginia beach, va Posts: 21 Thanks: 0 Thanked 0 Times in 0 Posts	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

02-17-2007, 02:44 PM	#4
Pete Ebbink User Join Date: Jun 2002 Location: The USA Posts: 5,919 Thanks: 0 Thanked 6 Times in 4 Posts	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.

02-20-2007, 08:36 PM	#5
Tequila53 New User Join Date: Feb 2007 Location: Eastern CT Posts: 3 Thanks: 1 Thanked 0 Times in 0 Posts	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

02-20-2007, 09:25 PM	#6
Pete Ebbink User Join Date: Jun 2002 Location: The USA Posts: 5,919 Thanks: 0 Thanked 6 Times in 4 Posts	Thanks, George... I did not pay much attention to metallurgy in college...