You are buying 36 VINTAGE Acrylic Mother Pearl High Dome Window Shank Button 18.5mm .53". I bought a huge tub of vintage buttons, I had plans on selling them at the shows but did nothing with them, so I sit down and grouped like buttons, it took me quite a while to do this. There are 36 of these all match, they are either shades of lvory to a very light yellow Color, They all have shanks and a window into the top bubble dome. There all measure 13.5mm or .51". These have never been used and are mint condition. I have a lot of plastic metal resin glass buttons to list so check my other items. Smoke and Pet Free. Shipping is free in the US, no overseas shipping.