vintage custard glass shades, set of replacement lamp shades for hanging light

Set of three old glass shades with ivory custard colored finish, very art deco, with the beaded 'candlewick' rim. These have a little browning / staining to the color which we haven't attempted to remove - these ivory shades are so hard to find, and we didn't want to risk removing the color with improper handling. Shade measurements are 1 3/4" across the fitters, 4 3/4" in diameter across the widest part of the shades, and and 3 1/4" tall top to bottom in a straight line.