Mercier Prototype Manx Blanc: a white ceramic calendar dial, shipping October 31

The Manx Blanc is Mercier Prototype's high-contrast interpretation of a compact calendar instrument. Its white ceramic dial carries separate day and month subdials at three and nine o'clock, while the date appears in an aperture at six. These are calendar displays, not chronograph counters—a meaningful distinction in a watch with the visual balance of a sporty complication.

The 42 mm case is made from 316L steel with a dark PVD finish, contrasting sharply with the dial. Domed sapphire glass, Swiss Super-LumiNova, a screw-down case construction and 100 metres of water resistance make it a relatively robust daily watch. The 51 mm lug-to-lug length gives the angular geometry a sizeable wrist presence.

Behind the dial runs Miyota's 9122 automatic day-date-month movement, with approximately 42 hours of reserve. Mercier Prototype prices this serial-numbered edition at $795 and advertises October 31, 2026 as its shipping date. The stated production run is 200 pieces across the Noir and Blanc dials, rather than 200 of each.