Serving slice - scandinavian?

Found in Denmark. I think 11L is 11 Loth but I’d love to confirm a source

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11L = 11 loth.

https://www.925-1000.com/forum/viewtopic.php?p=63443&hilit=11L#p63443

https://www.925-1000.com/forum/viewtopic.php?p=47433&hilit=11L#p47433

NIM - maker’s mark?