Is this an authentic WW2 Danger porcelain sign?

[TrondK]

At least this latest production has no "rzm" and "ss" stamps everywhere.

[Wagriff]

A crude attempt to age a fake into looking credible...but it failed.

[Wilhelm Saris]

The stamp on the back does not make any sense and appears to be placed there for pizzaz value. Although not conclusive, I have never seen anything like this in many years of collecting. Further, the design and construction are not like anything I have seen made in the period

During my works for my book, I have not seen any sign or plaque with such an eagle at the reverse. Seeing one I would immediately pass!.

[stuka f]

Porcelan?
To me it is enamel on metal.
And fake indeed.

[Wilhelm Saris]

Porcelan?
To me it is enamel on metal

You're right. It is an enameled sign. Many persons call it porcelan, which it isn't!
In my book (text in English) things are explained in a chapter: producing techniques.

[HPL2008]

Post-war warning sign for poisonous materials with a bogus "Nazi" stamp on the reverse to increase value. Forget it.

[JDCLXVI]

Hello all,

Sorry for the late reply. I was very cautious at picking it up at first for that same reason. Fortunately, I didn't pay too much for it, but it still kills that I should have known it wasn't real, as that was my first instinct. Thanks again, I appreciate all your input and responses.

Jack