(7) H3D of April '69 and (8) HB90 of Dec. '70, nearly the same model. (9) is the FB50 of Dec. '70, also sold in Europe, the YB90 of Nov. '72 (10) was sold for a long time, (11) YB50 was identical in shape. The new YB90 (12) of Mar. '76 was the last with this "7-bone" frame as Yamaha called it. (13) and (14) are the '76 YB50 and YB100 models, which were both extremely popular in many markets.

Yamaha H3D, Apr. '69