TISSOT 27BBrandTISSOTCaliber27BSize12FunctionVersionHands0,65x1,40Stem7922Stem (subs.)Stem (2 pce)Balance staff33208Balance staff (subs.)Mainspring (subs.)1,7x10,0x0,12Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.182BBarrel with drum + cover9880018227B195BCore and ratchet wheel, riveted9880019527B200BCenter wheel + cannon pinion9880020027B210Third wheel and pinion025998214Third wheel with long pivot025998224Second wheel -long lower pivot9880022427B250Bhour wheel9880025027B401Winding stem8027922443BSetting lever assembled705BEscape wheel -pinion straigt piv.9880070527B721Balnace cplt. -for shock-absorber9880072127B723Balance staff ST -shock-absorber80233208