EK 1914 1914 EK2 "W-S",overstamped with "Z"

[Motorhead]

For the friends of the imperial iron-I'm shure some of you can remember the last overstamped EK2 I postet a while ago.That time I thought it's just a mistake or something unique.I was wrong-this one here that dropped in half an hour ago is the twin of the other one! For shure no "Z" core! Same EK than the last one,also the maker "S-W" overstamped with a "Z"......strange!

Micha

Obverse

[Motorhead]

Reverse

[Motorhead]

Maker Mark