I have 2 prints with the name Boyer in pencil and the etching triangle on the back. In the lower left corner 'Ferme en nivernais 6/60' is on one, and ' ? l'oree des bois 5/60' on the other. Both have 'Copyright 1936 Camilla Lucas NY USA'. There is also a sticker on the back that says VILAS-MAGES Chicago with some numbers. Can you tell me anything about the etching and it's worth? Thank You
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