Please help identify the silver mark on this unique spoon

[turtlelady]

Hello,

Please help identify the silver mark on this unique spoon. There's an unidentified mark and "No 90". Thanks a bunch!

[SirWatkynBassett]

Hello,

The style of spoon and the mark indicate that it of Dutch manufacture.

A very good article on Continental silverplate numbers can be seen here: http://www.925-1000.com/a_platenumbers.html

Bassett

[turtlelady]

Thank you very much for your help!