1930’S ? DECO BUTTERFLY WING PENDANT WITH UNDER GLASS 15mm x 19mm

I found this very pretty silver Butterfly wing pendant this week.   Its fascinating to think that these were first introduced at the 1924 British Empire Exhibition in the Deco era.   This piece cleary has age to it but despite that is in lovely vintage condition.   I dont see any scratches on the glass. There seems to be a makers mark on the back but is quite worn.  The words Silver and England are also engraved into the back. The picture painted on the inside of the glass is a silhouette of a tree with the moon behind it overlooking a lake which has come out well.  Please look at the pictures carefully and dont hesitate to ask questions. 

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