Fish Silver mark

[John_Jenkins]

Could someone please help me identify the marks on this child’s cup? I was told they are Dutch.

[Bartholomew]

Whole item photo, please.

Hans Jensen.

https://www.925-1000.com/forum/viewtopic.php?t=41019
https://www.925-1000.com/silverplate_J.html
https://www.925-1000.com/forum/viewtopic.php?t=19005
https://www.925-1000.com/forum/viewtopic.php?t=37229