Indeed, Frisian ornamental/ decorative spoon or memorial/commemorative spoon for Atje (Frisian girl's name) 1768. The maker's mark
SvO for
Sikke
van
Ommeren, registered in Leeuwarden, 1751-1779.
https://www.openarchieven.nl/frl:99643d ... 3239398/nl
Bluntly, Frisian silver below 1st Frisian standard (934/000) maker's mark only, silver standard around 875/000.
Peter.
Source;
Zilverstudie.nl/ Jan Schipper