By replacing the steel balls in automatic movements with rubies, it is possible to increase their number without improving the quality of the movement.
Manufacturers who used the modified A.Schild automatic calibers displayed 41 on their dials: this was the case, for example, for Camy, Candino, Damas, Invicta, Tradition, Wega, Rotary, Precimax, and Dogma. A modification of the ETA automatic calibers (2450 or 2375) made it possible to advertise 57, 60, or 77 jewels. And with the FHF 65 caliber, with its peripheral rotor mounted on ball bearings, it was possible to replace the steel balls with ruby balls and increase the total to 51, 60, or even more.
These impressive figures were claimed for the Selza Datamatic, Octo Missilemaster, and Camy Sputnik models, as well as by Royce and Candino. Finally, the height of extravagance was reached by Cauny, which in 1962 offered models with a choice of 57, 81, or 110 jewels!
This exaggeration was enough to leave potential buyers rather perplexed. This is what the London court sought to punish in 1962 by condemning the practice of "up-jewelling" as contrary to the Merchandise Marks Act, or in short: false advertising. In any case, the English decision had the effect of putting a stop to ostentatious advertising of the number of rubies, even though the production of certain movements of this type continued until the end of the 1960s.