I'm afraid, unless you have unquestionable provenance or photographic evidence to prove otherwise...., that this "clock" is complete fantasy.....The "Nazi" symbols on the watch itself, including the engravings, are all added
to a pre-existing pocket watch....the swastika is poorly executed on the watch case, and the small cutout swatika on the swivel is "overkill" and completely impractical (it would break off with use....!) The eagle on the lining and the huge swastika on the larger "Clamshell" brass Case are also way over-done
, completely non-typical for German WW 2. IMO this is typical "Eastern European Junk".....something trumped up to be something it never was. Sorry....
Avoid clocks, rings, and anything emblazened with SS runes or oversized swastikas, images of Hitler, etc.....as the flea markets in Eastern Europe (and elsewhere, too!) are crawling with them!