Seamaster 300 CK14755

Second Seamaster 300: same 39 mm straight-lug case and look as the CK2913, but without broad arrow hands and with the 55x-family caliberCaliberThe designation of a watch movement, identifying its design or movement family. 552 (or the 17-jewelJewelA natural or synthetic stone used as a bearing or endstone for a movement pivot. 550 for the United States). Early pieces keep the lollipop seconds hand; later ones mostly have a lance seconds hand with a luminous tip.