Bulova "Accutron",Cal. 214H,40 x 40 mm,約 1960 示範模型的附音叉小時鐘,搭配黃銅錶殼 Bulova "Accutron", Cal. 214H, 40 x 40 mm, circa 1960A demonstration model of a tuning fork watch in a brass case#43598