Most watches we receive need, first andforemost, a good cleaning. In this case, we opened up a fine classic watch todiscover that, as well as requiring cleaning, it required a new ‘balancestaff’. All watches require a balancestaff; this is a shaft onto which the balance is riveted. The balanceoscillates, whilst each staff has fine pivots on each end, which are housed inlubricated, jewelled bearings. These are very delicate, especially the earlierforms that don’t incorporate any shock-proof mechanism. With these early formsof balance staff, any drop or knock can break the pivots – and in this case thepivot was only half its true length.