Audemars Piguet Royal Oak Jumbo A-Series

About this reference

The Audemars Piguet Royal Oak 5402ST A-Series was produced between 1972 and approximately 1974, representing the first 2,000 units of the original Royal Oak production. Collectors prioritize the A-Series due to its historical status as the debut luxury steel sports watch and its specific design features, including the "AP" logo positioned at 6 o'clock rather than 12 o'clock. The reference features a 39mm monobloc case and the ultra-thin Calibre 2121, developed by Jaeger-LeCoultre. Secondary market prices typically fall within the $100,000 to $200,000 range, though exceptional examples with original "tropical" dials or full sets can exceed these figures. A notable production detail is the sequential numbering on the case back; collectors specifically seek the earliest "A-Series" designations, as later B, C, and D series moved the logo to the 12 o'clock position and saw higher production volumes.