Germany-Sudetenland, Rumburg Stamp

I found on a sales site this cutout of an entire postal (or administrativ?)
I think it's Mi # 52, Sudetenland-Rumburg, 1938.
Michel mentions vertical or horizontal pairs, with a decorative field between stamps.
On the left and right side there are parts from other 2 stamps.
I don't think the marking is postal (administrative ??) and I don't have any experience about overprinting (forgerie / genuine)
Thanks for any information about it.

The whole thing looks like forged overprints and boxed cancels.
The overprint reads "we are free"
The boxed slogan cancel reads "political and administrative headquarters in friedeberg "

This isn't an area I pay much attention to, so take all of this with a grain of salt.

Michel would call that Rumburg 52 ZS, overprinted on Czechoslovakia 401 ZS. It's numbered but not priced in my 2020 Specialized.

The German Philatelic Society Reference Manual of Forgeries (mine is dated 1990) depicts the genuine overprint, and then 20 examples of fraudulent overprints. Yours doesn't match the genuine (the W and the e are instantly obvious as not matching) but, I don't think yours matches any of them. Your overprint is cruder than the genuine, as well.

Here is where I start to make assumptions. Michel calls that a Type I overprint. It is on the first Rumburgs (1-17) and then again on 51 and 52. GPS says that their illustrations apply to Mi 1-17.

I assume when it was applied to Mi401, it was still the same Type I found on Rumburg 1-17, but GPS doesn't specifically say so.

So now we can wait for someone who knows what they're talking about.

Thank you both.
I don't have a Sudetenland stamp yet.
I hoped it would be a low-value stamp to escape the attention of counterfeiters.
In Michel's catalog the type I overprint is very small and can't help me for comparison (cid-thank you for drawing my attention to W and E)




I hope someone has certified stamps in their collection and posts them for reference.

I don't think I would buy any Sudetenland overprint without a certificate. They are among the most forged issues in all of German philately.