Our Morning Star button with a removable Chicago screw back. Traditional Concho button made and finished by hand, in New Mexico.  Best quality, aged-look brass with a slight sheen. 5/8" diameter, domed, about 1/2" thick including screw. It's a fairly short screw and will snugly hold about 1/8" thickness of leather, fabric, etc. The screw makes the concho easily taken on and off as needed. 

Limited supply. This maker has now retired, so once these are gone, they're gone.