Silver picture frame with sail boat



Could someone help me with this hallmark?

“ETAIN” - French for tin (pewter).


https://www.etsy.com/listing/1538332178/vintage-french-pewter-lidded-serving
https://www.925-1000.com/forum/viewtopic.php?p=202940&hilit=etain#p202940

https://www.leboncoin.fr/ad/decoration/2821441351