Patek Philippe Complications Annual Calendar 38mm Moonphase – Steel 4947/1A-001 BLUE STEEL

The Patek Philippe Reference 4947/1A-001 is a sophisticated annual calendar distinguished by its case and bracelet crafted entirely from stainless steel, a material historically rare for this complication from the manufacturer. This 38mm timepiece features a blue dial with a sunburst finish that transitions from lighter to darker tones towards the periphery, creating a dynamic and elegant aesthetic. The case exhibits impeccable finishing with a combination of polished and brushed surfaces, a signature of Patek Philippe’s attention to detail. Applied Arabic numerals and faceted Dauphine hands are crafted from white gold, filled with luminescent material for legibility. The dial layout is clean and highly functional, integrating day, date, and month apertures at 12 o’clock alongside a moonphase indicator at 6 o’clock, all framed by a railway-track minute chapter ring.

At the heart of this watch is the self-winding Caliber 324 S QA LU 24H/206, visible through the sapphire crystal case back. This movement operates at 4 Hz (28,800 vibrations per hour) and provides a power reserve of 45 hours. The annual calendar complication is a highly practical feature, requiring correction only once per year at the transition from February to March. The moonphase display is exceptionally precise, deviating by just one day in 122 years. The movement’s decoration is flawless, with Geneva striping on the bridges, circular graining on the mainplate, and chamfered and polished edges on all components, confirming its status as a high-grade manufacture caliber.

This particular example is in mint condition, showing no visible signs of wear on the case, bracelet, or clasp, consistent with careful ownership. It is accompanied by its original manufacturer papers and documentation. Within the collector’s market, Patek Philippe’s complicated steel watches are consistently in high demand due to their relative scarcity compared to precious metal versions. The Reference 4947/1A-001 occupies a specific and desirable position, offering the utility of an annual calendar and the classic appeal of a moonphase in a robust and versatile steel case and bracelet configuration. Its combination of practical complications, sophisticated design, and the inherent collectibility of a Patek Philippe steel model makes it a significant and enduring timepiece.