SMITHS EARLY PRE-HILLARY TYPE WRISTWATCH C 1951 LONGINES The movement is c series

The movement is c series

The actual caliber designation for this movement is 0421

as on the back of the famous car marque

with the hands and indices being gold as well

SMITHS EARLY PRE-HILLARY TYPE WRISTWATCH C 1951 LONGINES The movement is c seriesAn early Dennison Aquatite cased smiths 12 15 wristwatch. I'm not sure that these are full production, but rather an amalgam of models as a precursor to the more mass produced versions, hence the rather crude font used in the printing of the name on examples of this watch. This model features a solid dustcap, originally intended to be released after the winding stem has been unscrewed, so as not to cause unnecessary damage, but as here usually seen