The maker's mark W.G
for Willem van de(n) Goorberg, registered in Leiden 1779-1816..? Year letter slanted
capital T for 1801, during the end of the last alphabet, the province standard mark of Holland, the lion rampant seen in a shield without crown.
Willem van den Goorberg was born on 8 June 1754 in Delft. He worked as a silversmith in Leiden from 1779 to 1816...? 1833 (died).https://www.openarch.nl/elo:61d21dcc-a6 ... ec4ff38c42
During the Leiden guild period he used two maker's marks; W.G an W:G
in a rectangle, during the French occupation, Kingdom of Holland 1807-1812 maker's mark Wg
in a"square"shield. Later his maker's mark conform French rule in a lozenge: G above an Anchor 1812-1816....
I believe you know both sites below, for the moment not much more to find online and both have a commercial goal: https://keuren.zilver.nl/author/tackenco/page/44/http://wiki.gzu-online.com/index2.php?p ... 700&dd_to=
Source;Karel A. Citroen, Dutch Goldsmiths' and Silversmiths' Marks and Names prior to 1812
W. Koonings De keuring van goud en zilver tijdens het Koninkrijk Holland
Waarborgholland, ˜Netherlands' Responsibility Marks since 1797
Leids Zilver Stedelijk museum de Lakenhal -Leiden
L.B. Gans Nederlands Goud- & Zilvermerken van Voet,