This Omega ref. 055 ST 175.0035, a self-winding bissextile perpetual calendar with moon phases , is a prototype and unique piece , never commercialized. It was one of the personal timepieces of Anton Bally (1946-2002), former director of ETA S.A., one of ...
. . . is puzzling as they've made day-dates, triple calendars, and moon phases for a century. I was aware of the Louis Brandt model of the '90s (and saw it in the metal at OmegaMania), but had no inkling of this prototype. Are you positive regarding the d...
Check here: https://www.futuregrail.com/auctions/Omega/Ref-055-ST-1750035-prototype-unique-piece-former-property-of-Anton-Bally-director-of-ETA-SA-stainless-steel/May2025/5 And it seems consistent, as the Louis Brandt PC is only 34 mm: https://pushers.io/...
While this is a piece unit, what really appeals about Omega is that they often bring these kinds of pieces that might not fit into a strict product plan but surprise and delight exactly because of that ๐๐ป๐๐ป
. . . perpetual calendar. Had I been aware of its dimensions, I might well have chased down a Louis Brandt perpetual when perpetual calendars were my passion.