Brand New and Genuine Diameter 2.4 inches (6 cm), BC#/BF#, 1988/07-1993/09.30, A-D year, S, TW, BD#/BG#, 1993/05-1998/11.30, A, B, C, S, W, BE#/BH#, 1997/11~203/03/04.30 , A to D year, S, W