Collar Stud for Detachable Collar in a Gold. The profile is a flat shape measuring 1/2" tall with a 1/4" diameter x 1/16" tip. The flat style collar stud is generally used for the stud located at the back of the collar. Various markings on the base: "SWANK" and "2 FOR 25", "SWANK" and "25¢" and "1/40-10K R G P", "SWANK" and "1/20-12 K.G.F.", or "SWANK" and "25¢". Sold by the pair.