All diamonds are European Cut. 55 ctw H/SI and 11 additional weighing approximately. Top of ring measures 24.5mm by 18mm.
Ring has engraving and milgrain details. Finger size is just a bit over a 5 on my mandrel, see photos.
Maker is unknown, ring has been tested to confirm platinum with an XRF Analyzer. The item "Vintage Estate Art Deco European Cut Diamond 1.40cwt Platinum Ring Size 5+" is in sale since Wednesday, January 27, 2021. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Art Nouveau/Art Deco 1895-1935\Rings".
The seller is "dgreenbaum2012" and is located in Murrysville, Pennsylvania. This item can be shipped to United States.