They are signed with acid stamped SINCLAIRE in block letters. They date to the 1920s. The item "Beautiful Set of 6 Signed Sinclaire Cut & Floral Engraved Glass Plates 8 1/4" is in sale since Friday, April 3, 2020. This item is in the category "Pottery & Glass\Glass\Glassware\Cut Glass\American Brilliant".
The seller is "glass101" and is located in Sagamore, Massachusetts. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia, South africa, New Zealand, Egypt, Reunion.