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IWC Portuguese 3714 Calibre 79240

the number in felt tip pen is probably a BHI membership number

the bezel gasket wasn't put in correctly by the last person who put the watch back together

dirt got in through the bezel as the gasket wasn't put in properly

the sub hands were pressed on very tightly, and are a bit too close to the dial

this additional set of gears change the position of the sub-second hand from the standard 7750 movement

the pushers will be cleaned, and new gaskets fitted

new mainspring

very nice performance!

new pusher and crown gaskets

new bezel gasket

new case back gasket