Hi and again welcome to the forum,
City guild mark of Gouda, uncrowned for 2nd standard of silver or ‘kleine keur’ for .833 fineness. The date letter for Gouda, probably an O, for perhaps 1768 or 1793
Maker’s mark looks like a bird in a round shield, unfortunately I have no access to my library but if memory serves me well, it could be one of the bird marks used by: Pleunis van Geelen, registered in the city of Gouda during 1782-1807. Pleunis van Geelen became essayer and appraiser of the city Gouda in 1795. However the city of Gouda is close to the city of Schoonhoven, around 32 km apart, and the silversmith’s of Schoonhoven were known travelers and sold there items even in Germany and France. The Assay rules in Gouda and Schoonhoven were not always strictly obeyed and for small, light weight silver items both cities had little rules.
In Schoonhoven, two registered silversmith’s used a bird mark as their maker’s mark. The ‘dove’ maker’s mark has been contributed to: Abraham Eduart Hoek (1768-1793) and to Jan van Geelen 1759/60-1784 (died 1792). Both silversmiths’ registered in the city of Schoonhoven used a dove as their maker’s mark and perhaps were known in Gouda and allowed to have their small silver items assayed in Gouda. But again plenty of assumptions and uncertainties about the maker's mark. Next week I will be able to confirm or tell you more.
In the mean time for the maker's marks and city marks see:
http://www.925-1000.com/forum/viewtopic.php?f=5&t=32028
Oel