This replica grand-complications 6104R0 gold brings one of the most visually dramatic watches in the Patek Philippe catalog to the wrist. The 6104R-001 reference is a Celestial model in 44mm rose gold, featuring a rotating star chart on the dial that tracks the night sky over the Northern Hemisphere in real time. Unlike standard astronomical complications that show moon phase alone, the Celestial displays the apparent motion of the stars, the moon’s shape and trajectory, and the meridian passage of Sirius throughout the year. The rose gold case provides a warm backdrop for the deep blue or black aventurine-style dial.

Case & Movement Specs

• Case diameter: 44mm
• Case material: rose gold
• Dial: sky chart with moon phase and star positions
• Functions: astronomical display, moon phase, moon trajectory, Sirius transit
• Crystal: sapphire
• Case back: sapphire display
• Complications: grand complication (celestial)

At 44mm this is one of the larger Patek references, but the dome-shaped sapphire crystal over the celestial disc gives the dial a depth that justifies the diameter. The rose gold case has polished flanks with a satin-finished bezel ring.

Caliber Breakdown

The genuine 6104R uses an ultra-thin self-winding movement that drives two sapphire crystal discs rotating at different speeds. One disc carries the star field, rotating once per sidereal day (23 hours 56 minutes 4 seconds). The second disc shows the moon’s precise shape and orbital position. This level of astronomical accuracy sets the Celestial apart from decorative moon phase watches that simply show full, half, and new moon. For another interpretation of the Celestial concept, see the 6102R-5102R in rose gold, which shares the celestial display in a different case configuration. The broader grand complications collection includes perpetual calendars and minute repeaters alongside these astronomical models.

How It Compares

The 6104R sits at the intersection of watchmaking and astronomy in a way few other references attempt. While perpetual calendars track dates and tourbillons address positional errors in timekeeping, the Celestial maps the actual sky overhead. The 44mm case size accommodates the dual-disc system without crowding, and the rose gold construction adds warmth that platinum versions do not offer. This replica grand-complications 6104R0 gold puts that celestial mechanism on the wrist for those drawn to astronomical horology over traditional calendar complications.