Re: Another 1920 Luger
IMHO, both those magazines were "matched" after market. They are wrong for the period and magazine numbers of that style have the suffix letter on them.
But since Luger magazines are often not a match for the gun, value is not greatly impacted. A nice Luger and at a very good price.
The code "dlu" was Ewald Lünenschloss Militäreffekten [military equipment], Solingen.