Hello Georg
Thank you for your clear photos, for showing all the marks, and for showing the entire object.
You have read the guarantee mark and the silver standard mark for Paris, 1798-1809.
The maker’s mark in a lozenge-shaped reserve is for Pierre Lagu, hollowware maker (la grosserie), working at 63 rue St-Louis. Lagu’s symbol was a vine leaf and a rose (une feuille de vigne et une rose). Lagu registered in 1798. No end date is given, but he was mentioned in the Almanach du Commerce in 1805 and 1806.
See Arminjon, v. I, no. I, no. 02991, p. 296.
This maker has also appeared on the forum a while ago. See:
viewtopic.php?f=7&t=22994&p=55437&hilit ... agu#p55437
Regards.