Reinventing the Perpetual Calendar: The Legacy Machine Perpetual by MB&F and Irish watchmaker Stephen McDonnell redefines this classic complication with a revolutionary in-house movement.
Designed from scratch, this 581-component calibre eliminates traditional perpetual calendar issues like skipping dates or jamming gears. A mechanical processor replaces the outdated grand levier system, using a default 28-day month and adding days as needed—no redundant fast-forwarding. Adjustments are seamless with deactivated pushers during calendar changes and a quickset pusher for leap years.
Dial-side aesthetics showcase the intricate complication beneath a suspended balance wheel, blending mechanical innovation with stunning artistry.
While we strive to present product photos with the utmost accuracy, variations in lighting and device settings may result in slight differences in colour compared to the actual product.
Features
This groundbreaking design allows unprecedented freedom, placing the full complication on display for a visual masterpiece.
Specifications
Engine
• Fully integrated perpetual calendar developed for MB&F by Stephen McDonnell, featuring dial-side complication and mechanical processor system architecture with inbuilt safety mechanism.
• Manual winding with double mainspring barrels.
• Bespoke 14 mm balance wheel with traditional regulating screws visible on top of the movement.
• Superlative hand finishing throughout respecting 19th-century style: internal bevel angles highlighting handcraft, polished bevels, Geneva waves, and hand-made engravings.
• Power reserve: 72 hours
• Balance frequency: 18,000 bph / 2.5 Hz
• Number of components: 581
• Number of jewels: 41
Functions/Indications
• Hours, minutes
• Day, date, month
• Retrograde leap year
• Power reserve indicators
Case
• Material: 18k 5N+ red gold, 18k white gold, 18k 3N yellow gold, platinum 950, grade 5 titanium, palladium 950, or stainless steel.
• Dimensions: 44 mm x 17.5 mm
• Number of components: 69
• Water resistance: 30 m / 90’ / 3 ATM
Sapphire Crystals
• Sapphire crystals on top and display back treated with anti-reflective coating on both faces.
Strap & Buckle
• Black, grey, brown, or blue hand-stitched alligator strap with gold, platinum, titanium, or stainless steel folding buckle matching case material.Features
Engine
• Fully integrated perpetual calendar developed for MB&F by Stephen McDonnell.
• Dial-side complication with mechanical processor system architecture and inbuilt safety mechanism.
• Manual winding with double mainspring barrels.
• Bespoke 14 mm balance wheel with traditional regulating screws, visible on top of the movement.
• Superlative hand finishing inspired by 19th-century craftsmanship:
• Internal bevel angles highlight handcraft.
• Polished bevels, Geneva waves, and hand-made engravings.
• Power reserve: 72 hours
• Balance frequency: 18,000 bph / 2.5 Hz
• Number of components: 581
• Number of jewels: 41
Functions/Indications
• Hours, minutes
• Day, date, month
• Retrograde leap year
• Power reserve indicators
Case
• Material:
• 18k 5N+ red gold
• 18k white gold
• 18k 3N yellow gold
• Platinum 950
• Grade 5 titanium
• Palladium 950
• Stainless steel
• Dimensions: 44 mm x 17.5 mm
• Number of components: 69
• Water resistance: 30 m / 90’ / 3 ATM
Strap & Buckle
• Hand-stitched alligator strap in black, grey, brown, or blue.
• Folding buckle in gold, platinum, titanium, or stainless steel to match case material
Product code : P-03.SL.S-P8-U
Delivery:
·Estimated delivery within 30 days.
·Worldwide via DHL, Aramex, FedEx.
·Not liable for customs or courier delays.
Refunds:
· Store credit only; excludes shipping and taxes.
· Not responsible for foreign exchange fees.
Returns:
·Accepted for quality issues, damage, or wrong items.
·Request via email within 2 days; require Return Authorization Number (RAN).
·Items must be unused and in original packaging.
Exchanges & Cancellations:
·No exchanges; place new order.
·No cancellations after order placement.
For detailed information, visit Glam Moda Policies.
