2499J Series 2Ref

Widely considered a grail watch, the 2499 is among Patek's finest creations, combining a perpetual calendar and chronograph in a design that many argue improves upon the 1518 and 3970. The model is categorized into four distinct versions: early pieces with square pushers and Arabic numerals (1951-1955), followed by three iterations with round pushers and varying dial configurations, including the final sapphire crystal version produced from 1978 to 1985.