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Sicura Chronograph Calibre EB 8420-74

the central second hand tube stays stuck on the second pinion, and comes off the hand

the sliding pinion and intermediate setting wheel are worn out

old worn out post taken out

making a new post on the lathe

the new post

post with intermediate wheel

the new post in place

unfortunately, there is too much power on the setting, and the new post wobbles loose again

the two parts on top of the old plate are different in the new one, and need to be changed over

parts changed over to new plate