Hi John,
Silver brazier.
Yes, the flower (rose) in a crowned shield for Dordrecht, the makers mark GS above a scallop for: Govert Steenbeek 1771-1800, date letter F for; 1781. Question; what you call a s
mall o with crown above, is the crown above the small o and in a shield, like the 1807 duty mark:

or could it be a small
a in a crowned shield? Like:

If so, it is the Dordrecht redeem and tax-mark of 1795
For more information see:
viewtopic.php?f=5&t=32028Govert Steenbeek; baptized on 3rd of February 1745, son of Pieter Steenbeek and Hendrica Scheers, buried 24th April 1800
Oel.