As with all things Luger, it is not quite that simple.
There are at least 3 distinct crimp/stab types on the DWM mags.
Early or very early ones = straight, similar to erfurt
later or mid production = "trapezoid" shape
late production= half moon

I have no idea what year, early, mid, or late is.

Very early is the 1900/1901; by 1920 for sure all are half circle.

Maybe someone else can fill in the "real" dates.:evilgrin:

Don as long as they fit both 9mm and 7.62! Tks Ps Whats the hole for?

Luger Patent~ http://patentpending.blogs.com/paten...er_pistol.html

NRA Artillery Luger~~http://www.nramuseum.com/guns/the-ga...-magazine.aspx

The absolute finest article on luger http://www.gundigest.com/gun-digest-...rpistolhistory from the writer and luger genius, the late Fred Datig~~

A Luger Rifle? http://www.guns.com/2012/07/14/georg...otton-weapons/

German MP18~~ http://weaponsman.com/?p=16398

Another Favorite~ https://gunsmagazine.com/contemporary-handguns-of-wwll/

That Toggle! http://www.landofborchardt.com/1900exp-article.html

A Great Site By A great Man! http://www.luger-genesis.com/luger_h...bellums_1.html

Swiss Hand Guns~ http://www.swissrifles.com/pistols/

Always Entertaining~https://www.youtube.com/watch?v=Y-h3kce1w_w

Machine Guns Part Two~https://www.youtube.com/watch?v=BOQhKzGzr80

Winchester, Tales Of The Gun~~ https://www.youtube.com/watch?v=DngEXRpL5o4

Another Winchester Rifle Modern Marvals~https://www.youtube.com/watch?v=P47-...IE7c-cfcX_f6-h

Debby and myself wish all of you our other family a wonderful and safe holiday!!! Eric 1961~

Historys' Tales Of The Gun, Automatic Pistols https://www.youtube.com/watch?v=IEbpe-TmTR4

A Short On The Christmas Truce~~https://www.youtube.com/watch?v=LyHI-XUtHYg

"Historys' Tales Of The Gun" are really informative videos, absolutely among my favourites.

The are both entertaining and informative! TKS

Tales Of The Gun ~~Ammunition~https://www.youtube.com/watch?v=1zt-Elkc64M

Gangster Guns~~ https://www.youtube.com/watch?v=O-rh9pdQFJU

Images Of The Christmas Truce~~ https://www.pinterest.com/search/pin...tocomplete%7C1

World War One Christmas Cards~ http://www.worldwar1postcards.com/ch...-postcards.php

Bob Hope Christmas Show In The South Pacific~https://www.youtube.com/watch?v=j2CD2MXSTTU

I post this program coming from Viet Nam for all our American Heros who sacrificed so much! Thank You~ https://www.youtube.com/watch?v=8uqN5mXWHZM

Not to forget the Andrew Sisters~https://www.youtube.com/watch?v=qafnJ6mRbgk

To top Christmas off!! https://www.youtube.com/watch?v=w9QLn7gM-hY

Eric

I send "special" Christmas whishes, to you and Family!

... and don't eat too much turkey!

Thank You Sergio. Debby celebrate Italian Christmas seafood dinner. Forty lobster tails, mussels, stuffed clams etc. Some traditions never fade! God Bless!

Olga my wife is Russian, she made Olivier salad (russian salad) as hors d'oeuvre, Italian ravioli as first course, then baked capon with vegetables.

All the best to you and family!

One of my favorites on Carbines~ http://www.smallarmsreview.com/displ...darticles=2802

Newly information regarding Georg Luger http://www.smallarmsreview.com/displ...idarticles=485

Great History On Navy Lugers~ http://www.smallarmsreview.com/displ...darticles=1537

A wonderful history of the Walther P38~~http://www.smallarmsreview.com/displ...darticles=1388

Walther Evolution Of Design~http://www.smallarmsreview.com/displ...darticles=1164

Mauser HSC~~http://www.smallarmsreview.com/displ...darticles=1633

James Bond PPK~http://www.smallarmsreview.com/displ...darticles=1103

The Museum In Germany~~ http://www.smallarmsreview.com/displ...darticles=1377

I'm not planning to go to Germany in the next future but I bet that museum must be worth a visit.