PLATINUM AND DIAMOND CIRCLE PIN WITH LETTER.circa 1960. Retailed by Black, Starr & Gorham, Inc., New York. Circle of 28 matched brilliant-cut round diamonds together weighing 2.96 ct., bead-set in channel, D: 1 1/4 in. Accompanied by original purchase receipt dated 1/22/60, Black, Starr & Gorham. Appraisal certificate dated 1/25/60 noting registry no. D4-12622 (marked on pin); and later appraisal information. Estimate $1,500-2,500
