The MB&F Legacy Machine Perpetual: case, 44.5 mm x
link 17.5 mm; case, yellow gold. Movement, perpetual calendar mechanism developed by MB&F and Stephen McDonnell; frequency 18,000 vph, with safety mechanism to block adjustment of the perpetual calendar when the date is changing; quickset mechanism for the year.
link Custom 14mm balance wheel; double mainspring barrels with 72 hour power reserve. Price, $167,000. Limited edition of 25
link pieces, world wide. View the entire collection at MBandF .