Naoya Hida & Co. NH Type 6A Perpetual Calendar (2025)

Case is 37mm with a thickness of 11.5mm, 904L stainless steel, brushed with a polished concave bezel, Calatrava-style silhouette, curved sapphire crystal with non-reflective coating, sapphire caseback. Dial is solid sterling silver (Argentium), hand-engraved Roman numerals and sub-dial indications by engraver Keisuke Kano, filled with cashew synthetic Urushi lacquer, brand logo and minute scale engraved by ultra-precision micro-milling, hand-polished 18k yellow gold hour and minute hands with hand-bent tips, heat-blued steel subsidiary hands, central hours and minutes with sub-dials for date at 9, day of the week at 3, and month with leap year at 6, paired with a hand-stitched black grained leather strap by The Sole and a 904L steel pin buckle. Movement is the calibre 3025PC, hand-wound base developed with Habring2 on a 7750 gear train, perpetual calendar module by Dubois-Depraz, 19 jewels, 28,800vph. Power reserve is 45hrs. Limited to approximately 10pcs, produced 2025-2026. Priced at JPY 7,500,000 excl. taxes