Girard-Perregaux has given its popular Vintage 1945 model a smoked sapphire dial, revealing the mechanics of the oversized date and moon phase of the in-house calibre 3300.

One of Girard-Perregaux‘s signature timepieces, the Vintage 1945 has for the first time a clear sapphire dial, tinted a light grey, that allows a look into the movement. The dial side of the calibre 3300 inside the Vintage 1945 Large Date Moon-Phases is almost entirely exposed, showing off the striped base plate and the gears that drive the big date and moon phase. Notably, the large date display is made up of twin sapphire discs just 0.1 mm high, one for each digit, meaning three pieces of sapphire are used for the dial and date. Even though the date discs are on different levels, the numerals are engraved on the bottom of the upper disc but the top of the lower one, so the date numerals appear to be on the same plane.

The calibre 3300-0105 inside is GP’s workhouse movement, having been in production for over 20 years and supplied to a number of other brands, including MB&F. It is automatic with a power reserve of 46 hours.

Curved on two planes – lengthwise and horizontally – the case measures  36.10 mm long and 35.25 mm wide. The the Vintage 1945 Large Date Moon-Phases costs US$16,000 in steel and $33,800 in rose gold.