Help with German WW2 postcard!

[VX95903]

Hi all,
I am looking for some help translating a WW2 postcard. The problem is, I don’t speak a word of German, and I can’t read the handwriting. If someone could help me with translating this into English, it would be much appreciated.

Thanks.

[McSeam]

Sorry, I can't help with translating, just want to say it's not a WW2 postcard: it was sent in 1931.

[Willmore]

I agree with McSeam.

I am working on the translation, but I am finding it tricky.

It appears to have been sent by a grandchild to their grandparents.

Front -

Herrn
Ernst Maek
Friedrichsthal Krs (Kreis) Niederbarnim

Wald Str (straße) 11

? Hoffmann

Rear -

Liebe Oma, Opa und (name)