I recently bought a small box containing 6 glass plate negatives. Judging by the packaging and paper envelops they are originally from Germany.
The photos seem to be from Rewahl, which was a part of Germany before 1945, and is now part of Poland (Rewal)

Some of the negatives were slightly damaged, but it was possible to get a good recognisable photo scan from each.

After some internet research I believe that some of the photos were taken at the ‘Strandperle’ in Rewahl, which doesn’t seem to exist anymore.
I found two postcards (shown here) which seem to show the same ‘Strandperle’ villa.

I believe thes photos were taken sometime between 1912 and mid 1920’s