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