Backstamp question

[urbanmark]

Hello, I am trying to find the maker of this backstamp, any help would be appreciated.

[silvermakersmarks]

This mark is upside down. It was for a while thought to be the mark of Meneses Orfebres of Madrid but has more recently been identified as most likely the mark of Eton Silver Inc. of Glendale, NY. See https://www.925-1000.com/forum/viewtopi ... 47#p202847.

Phil

[urbanmark]

Doesn't surprise me, I thought it looked a little odd...
Thanks for the help!