Affordable Watches For Your Collection Reacting To Underappreciated Watches FT Teddy Baldassarre4 X 6 In (2). Please check all pictures carefully. The calibre 12 addressed a few of the issues that appeared with the calibre 11s, modifications included using lighter jumper springs, a weaker mainspring to drive a redesigned date mechanism, some strengthening of various levers and hammers and a faster beat rate of 21,600bph as opposed to the cal…