Yes, indeed Dutch, town mark of Amsterdam, lion rampant, the provincial standard mark silver 934/1000. Year letter D. Unfortunately the maker's mark has disappeared or illegible. For more information see Amsterdam;
https://www.925-1000.com/forum/viewtopi ... 323#p80323

When I look at the crown of the Amsterdam city mark and the provincial mark, I believe the year letter D for 1738
See;
Peter.
Source;
Goud en zilvermerken van Voet, L. B. Gans, Premsela & Hamburger