German? Help needed

[wolfgang]

I inherited this silver basket with gilded bottom. Couldn't find anything about the hallmarking, tried Rosenberg, Scheffler, Tardy and 925-1000.
Is it german (13)? and who was the silversmith?
Many thanks in advance.
regards Wolfgang

http://h.imagehost.org/view/0005/Brotkorb_mit_Marken

[blakstone]

Wilhelm Conrad Hessenberg (1775-1837; Master 1799) of Frankfurt.

Ref: Wolfgang Scheffler, Goldschmiede Hessens (Berlin: Walter de Gruyter, 1976), p. 55 (mark #170), pp. 333-334 (maker #533, mark #315a).

[wolfgang]

Thank you so much blakstone
regards
Wolfgang