Yes, indeed Groningen, VG italics, in contour for Hendrik Willem van Giffen (1776-1856), silversmith in Groningen from 1795 to 1830
He used the maker's marks; VG italics, in contour, VG in contour, VG under flower in a rectangle, VG in lozenge (during French occupation), VG flower in rectangle, VG1 in hexagon.
Hendrik, like his father, became a silversmith. He obtained his master's degree in 1795 and continued the goldsmith's shop of his father and uncle Lucas van Giffen in the building Tusschen de beide Markten, corner of Guldenstraat in Groningen. He lacked a son as successor and he trained his second cousin Lambertus van Giffen.
When his daughter Willemina Margaretha van Giffen married his former pupil Nanno Folmer, he shared the company with him, so that for a few years it was known as the firm Folmer and van Giffen.
In 1820 Hendrik was a councillor, in 1832 he became alderman of the city of Groningen and withdrew completely from the company. He then moved with his wife to the Herestraat. This brought the curtain down on the dynasty of Groningen silversmiths Van Giffen.
Hendrik registered for marriage Groningen 08-06-1797 and married Groningen 02-07-1797 with Ellegonda ALINGH, born Poelestraat Groningen, baptized Martinikerk Groningen 22-01-1773, died Achter de Muur C95 Groningen 22-03-1839, daughter of Willem ALINGH (beer brewer) and Lucia Helena DIJK.
From this marriage: 5 daughters
https://www.greetsgenealogie.nl/gezinsk ... 1776-1854/
Peter.
Source;
Groninger keur zilver uit Stad en Ommelanden. Waarborgholland, ˜Netherlands' Responsibility Marks since 1797