The caliber 920 was until this year used regularly by Audemars Piguet as the caliber 2121 in the Jumbo Royal Oak watches
link beginning with the ref. 5402 in 1972 and ending
link with the ref. 15202. The movement was made by JLC until the early 2000s when Audemars Piguet took over production
link in Le Brassus. The 920 was also used by Patek Philippe as the caliber 28-255 and they used it in the first version of the Nautilus in 1976.