Corning® 96-well White Flat Bottom Polystyrene NBS Microplate, 5 per Bag, without Lid, Nonsterile Product Number 3990

A FINE AND EXTREMELY RARE 18K PINK GOLD AND DIAMOND-SET PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SLATE GREY DIAL, ORIGINAL CERTIFICATE AND BOX, SIGNED PATEK PHILIPPE, GENEVE, REF. 3990, MOVEMENT NO. 3'045'667, CASE NO. 2'994'099, MANUFACTURED IN 1997 | Christie's

The model is Patek Philippe's first perpetual calendar chronograph wristwatch to feature a diamond-set bezel, setting the design codes for its successor reference 5971. Reference 3990 was cased in yellow gold, pink gold, white gold, and more exclusively, in platinum.

According to tradition, the present watch is the first ever made ref. 3990 in platinum and was apparently the prominent showpiece at Patek Philippe's 1996 stand at the prestigious BaselWorld. In today's world where at times even the complicated masterpiece appears to become accessible, making an individual statement is paramount.

Consigned by a distinguished collector and offered in very good overall condition, the present timepiece is the extremely rare and highly coveted diamond-set 3990R. It features 40 baguette-cut diamonds of approximate 2.76 carats.

The Ref. 3990 was the first jewelry complicated wristwatch produced by Patek Philippe in series and was made in yellow gold, white gold, and platinum. It is believed that only 5 pieces were made in platinum. This watch is one of only three ref. 3990 in platinum to appear in public to date.

The Patek Philippe Perpetual Calendar Chronograph 3990 was produced from 1995 to 2005 and is virtually identical to 3970 of the time but with the addition of a baguette diamond bezel and diamond markers.

Patek Philippe's reference 3990 was produced from 1995 until the launch of the 5971P in 2007. The Ref. 3990 was the first jewelry complicated wristwatch produced by Patek Philippe in series and was made in yellow gold, white gold, and platinum. It is believed that only 5 pieces were made in platinum.

This reference is no longer in production. Very fine and important, water-resistant, pink gold and diamond wristwatch with round button chronograph, register, perpetual calendar, moon phases, with sapphire crystal back and a pink gold Patek Philippe buckle.

The chronograph mechanism features a column wheel for a most reliable and precise performance and the perpetual calendar will need adjustment only in the year 2100. The reference 3990 is characterized by its diamond bezel and luminous hands. It was produced in extremely limited numbers.