Color: silver, white, (gold tone backs/workings). I always try to point out any clear blemishes and condition. 0.25" = 1/4" or 6mm - pretty small for standard button holes. 0.38" = 3/8" or 9mm - also fits standard button holes.
SINGLES(2) 5/16" White MOP Round Vintage SWANK Formal Tux Prom Shirt Stud a247
SINGLES(2) 5/16" White MOP Vintage SWANK Formal Tuxedo Prom Shirt Stud a266
White Oval MOP Double Sided SINGLE Vintage CuffLink replacement lost/broken bb48
White MOP Double Sided SINGLE Vintage Cuff Link replacement lost/broken bb38
SINGLES(1) 5/16" White MOP Round Vintage Formal Tux Prom Groom Shirt Stud a114
SINGLES(1) 5/16" White MOP Round Vintage Formal Tux Prom Groom Shirt Stud a107