Factory Vaulted Cased EK1 - Need Opinions

[Colorado]

I am having to thin out the collection and have been discussing selling this to a forum member. Have had it a long time, but want to make sure it is what I think. I can't get the base out of the box and I don't want to force it to take a photo. Is it:

1. A factory vaulted Deumer? There is a very slight vault and I see no evidence (those bend lines) of it being hand done?

2. Is the case a nice early one with smooth synthetic leather?

Thanks in advance.

[Colorado]

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[Colorado]

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[Colorado]

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[Colorado]

last one

[Peter Wiking]

Deumer ? It is not a Deumer in my opinion.

Happy New Year.
Peter

[gasschutzgerate]

hello
for me, it looks like a Klein & Quenzer A.G
regards
Roland