Strange markings on Ek 2nd class

[A H]

I got this one in a mixed lot a few weeks back. Just started to look it over now and noticed something a bit strange on the obverse and reverse of the 12 o'clock arm. To the naked eye it looks like a pattern but under 60x magnification it looks like imperfections. There are also some less impressed marks to the 6 o’clock arm on the obverse, in the same position on the reverse. My gut feeling is saying bad manufacturing job. I would appreciate a few other sets of eyes on this one.

Best Regards

Adam


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[Strugu]

Make the macro photos.

[A H]

Make the macro photos.

Sorry mate the best I could get with the light. I will post some in the morning.

Adam

[Hans Kondor]

Maker is Lauer IMO.

[morel5000]

Maybe a vice or pliers?

Best regards,
Michel

[EKman]

Maybe a vice or pliers?

Best regards,
Michel

That's what I thought, looks like someone has clamped this one into a bench vice, the teeth inside the arms leave a similar pattern when you clamp down too hard on something. Maybe they secured it there to buff the silver frame or something like that.