my profile |
register |
faq |
search upload photo | donate | calendar |
11-17-2003, 06:45 AM | #1 |
User
Join Date: Sep 2003
Location: South Central Pennsylvania
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Significance of Nitro Marking
I am confused regarding the significance of the Nitro marking. From the markings index contained on the site:
"German "Nitro" commercial proof. Found on Lugers produced after 1920." I have a Erfurt 1913/1920 double date that has military receiver markings but a nitro proof on the barrel. Does this mean that the gun has been rebarreled, or does it mean that the gun was taken out of military use in 1920 and made available to police? Robert |
11-17-2003, 09:18 AM | #2 |
User
Join Date: Jun 2002
Location: San Mateo, California
Posts: 1,432
Thanks: 2
Thanked 71 Times in 56 Posts
|
I believe the C/N proof began to be used with later 1908 commerical production, superseeding "BUG" proofing, thus being much earlier than 1920. My 1908 commercial, #55055 has C/N proofs.
|
11-17-2003, 09:57 AM | #3 |
Patron
LugerForum Patron Join Date: Jun 2002
Location: POB 398 St.Charles,MO. 63302
Posts: 5,089
Thanks: 6
Thanked 736 Times in 483 Posts
|
Robert, I would not expect a C/N proofed barrel to be installed as part of a Weimar rework of your WW1 PO8. Most likely what you have is an East German replacement barrel. If this was done in the DDR, there will usually be importer marks somewhere on the pistol. The DDR C/N with be "thinner" than that used in the 1920 and before, and sometimes will have a date under it (eg. 953 for Sept 1953). TH
|
11-17-2003, 10:00 AM | #4 |
User
Join Date: Jun 2002
Location: Portland, Oregon
Posts: 3,899
Thanks: 0
Thanked 1,305 Times in 429 Posts
|
Robert,
Without knowing an awful lot more about your Luger--other markings on the barrel, presence of sear safety, etc.--it is only possible to say that it has undergone civilian proof testing. --Dwight |
11-17-2003, 11:30 AM | #5 |
User
Join Date: Sep 2003
Location: South Central Pennsylvania
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Ok I think the picture is coming together, the Luger is VOPO, and the barrel is stamped 853 below the nitro mark.
Please provide more detail on the sear safety. I understand that the sear safety was removed when Lugers were placed in service for Police to prevent the gun from accidentally firing after having been taken down. But where is the thing and what does it look like. Robert |
11-17-2003, 12:24 PM | #6 |
Lifer
Lifetime Forum Patron Join Date: Jun 2002
Location: The Capital of the Free World
Posts: 10,153
Thanks: 3,003
Thanked 2,304 Times in 1,096 Posts
|
Robert,
There have been many discussions on the Sear Safety and Magazine safety... Please do a search of the forums (link at the top of the page) and you will find the answers to your questions and graphics to show you what you are looking for.
__________________
regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..." |
11-17-2003, 01:11 PM | #7 |
User
Join Date: Sep 2003
Location: South Central Pennsylvania
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Thanks John. I looked on the parts drawing but for some reason I am not downloading the parts listing, all I get is the drawing with numbers.
Anyway I will do the search as you suggested. Should have thought of it before. Robert |
11-17-2003, 01:54 PM | #8 |
Lifer
Lifetime Forum Patron Join Date: Jun 2002
Location: The Capital of the Free World
Posts: 10,153
Thanks: 3,003
Thanked 2,304 Times in 1,096 Posts
|
Robert,
Here is one that I remembered: http://forums.lugerforum.com/lugerfo...=000669#000000 It was the only relevant one in this forum... check each of the other forums with the search function and I know there are a couple of good illustrations on the function of the sear safety because I posted them...
__________________
regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..." |
11-17-2003, 05:00 PM | #9 |
Moderator
2010 LugerForum Patron Join Date: Jun 2002
Location: Santa Teresa New Mexico just outside of the West Texas town of El Paso
Posts: 7,017
Thanks: 1,089
Thanked 5,164 Times in 1,700 Posts
|
</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">I understand that the sear safety was removed when Lugers were placed in service for Police to prevent the gun from accidentally firing after having been taken down. </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Actually Robert, the sear safety was ADDED to the Luger for the reason you stated.
__________________
If it's made after 1918...it's a reproduction |
11-17-2003, 07:08 PM | #10 |
User
Join Date: Jun 2002
Location: Byron, Georgia
Posts: 1,695
Thanks: 792
Thanked 1,677 Times in 551 Posts
|
</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Originally posted by rabbrt2:
<strong>Ok I think the picture is coming together, the Luger is VOPO, and the barrel is stamped 853 below the nitro mark. Robert</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">I've read that the "853" indicates that the barrel was either made or installed in August, 1953. FWIW as I have no positive proof that the information is correct. |
11-18-2003, 12:28 AM | #11 |
Moderator
Lifetime Forum Patron Join Date: Jun 2002
Location: Arizona/Colorado
Posts: 7,771
Thanks: 4,922
Thanked 3,123 Times in 1,434 Posts
|
Rabbert2, The Crown N was used when smokeless propellent was used to proof the pistol. The Crown U was stamped when black powder was used to proof it. I guess this was what you originally asked about? Jerry Burney
__________________
Jerry Burney 11491 S. Guadalupe Drive Yuma AZ 85367-6182 lugerholsterrepair@earthlink.net 928 342-7583 (CO & AZ) Year Round 719 207-3331 (cell) "For those who Fight For It, Life has a flavor the protected will never know." |
11-18-2003, 02:05 AM | #12 |
User
Join Date: Jun 2002
Location: Portland, Oregon
Posts: 3,899
Thanks: 0
Thanked 1,305 Times in 429 Posts
|
Um...a bit of pedantic detail here...
There are a number of different Crown/N and C/U conventions. The 1892 German proof law specified three markings, Crown/B, Crown/U, and Crown/G, to be used. C/B and C/U were stamped on the barrel, receiver, and breechblock of 1900-1906 Lugers; the C/B signified power-proof, C/U (for Untersuchung) signified inspection. C/G was only found on the barrel, G (Gezogen) meaning rifled.(Costanzo, p.196 & 206) In 1906 a new proof law was introduced, Crown/N replacing the C/B,U,G marks. C/N signified nitro proof. This proof was applied to Lugers until 1930. (Costanzo, p.201) Crown/U was the DWM/Mauser Oberndorf commercial proof found on Lugers manufactured from 1930-1933. A C/U with a different crown was used as the Mauser commercial proof from 1934-1939. (Costanzo, p.192 & 193) In 1950 the East Germans instituted a Crown/U as an inspection mark at Suhl, and a Crown/N as the Suhl nitro proof. (Costanzo, p.164 & 203) Although there is a lot of correspondence with N and U, the crowns are all quite different and can be differentiated in the context of the pistol on which it resides. --Dwight |
11-18-2003, 10:50 AM | #13 |
Patron
LugerForum Patron Join Date: Jun 2002
Location: POB 398 St.Charles,MO. 63302
Posts: 5,089
Thanks: 6
Thanked 736 Times in 483 Posts
|
Warren Buxton discusses the DDR dating codes in his "The P38 Pistol" Vol 3. I've also observed that many of the DDR reworks had the frame and trigger bar drilled for the sear safety, which they never installed. All of the unused spare DDR trigger bars that I purchased from Germany, were drilled for the sear safety post. TH
|
11-18-2003, 01:49 PM | #14 |
Lifer
Lifetime Forum Patron Join Date: Jun 2002
Location: The Capital of the Free World
Posts: 10,153
Thanks: 3,003
Thanked 2,304 Times in 1,096 Posts
|
Tom, if they didn't have the blueprints, I would wager that the sample gun they used to reverse engineer the manufacturing processes had that hole for the sear safety and no one ever questioned what it was for... if the pattern part had the hole... they all got one...
Just my
__________________
regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..." |
11-19-2003, 03:32 AM | #15 |
User
Join Date: Sep 2003
Location: South Central Pennsylvania
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Jerry,
Actually I was trying to figure out if the barrel on this Luger was original, but it appears from the posts that it is not, as it has a C/N over 853 (August 1953). Robert |
11-19-2003, 10:58 AM | #16 |
User
Join Date: Jun 2002
Location: Portland, Oregon
Posts: 3,899
Thanks: 0
Thanked 1,305 Times in 429 Posts
|
Robert,
If you would indulge my interest for a moment, could you tell me if there is a witness mark on this barrel? thanks. --Dwight |
11-19-2003, 02:26 PM | #17 |
RIP
Join Date: Jun 2002
Location: Ca.
Posts: 2,141
Thanks: 8
Thanked 89 Times in 54 Posts
|
"pedantic"?....is there a forum for those of us with out a dictionary.
|
11-20-2003, 03:53 AM | #18 |
User
Join Date: Sep 2003
Location: South Central Pennsylvania
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Dwight,
Yes there is. Robert |
|
|