Rolex Reference Numbers Explained
Every Rolex model carries a reference number, engraved between the lugs on older watches and printed on the guarantee card. It is the single most useful piece of information about a Rolex, and Japan's pre-owned market quotes it on every description. This guide explains how to read it.
Generations
Rolex references have grown longer over time. Mid-century watches carry four-digit references, such as the 1675 GMT-Master. Watches from the late 1970s to the early 2000s generally carry five digits, such as 16610. Later generations carry six digits, such as 116610 and 126610. The longer the number, the more recent the generation, with improvements to movements, cases, bracelets and materials along the way.
The last digit: metal
In five- and six-digit references, the final digit usually indicates the case material:
- 0: stainless steel.
- 1: steel and Everose gold.
- 3: steel and yellow gold.
- 4: steel and white gold.
- 5: Everose gold.
- 6: platinum.
- 8: yellow gold.
- 9: white gold.
So a 116618 Submariner is the yellow-gold version of that generation, and a 116610 is steel. Exceptions exist, so confirm against the guarantee card.
Suffixes and nicknames
Letters after the number usually describe the bezel or dial: LN for a black bezel (lunette noire), LV for green (lunette verte), LB for blue, and combinations such as BLNR (blue and black) and BLRO (blue and red). Collectors also use nicknames: Kermit, Hulk, Batman, Pepsi and Root Beer among them.
Japanese papers: domestic or parallel import
Japanese descriptions often state whether a watch is kokunai seiki (国内正規), sold new through Rolex's authorised dealers in Japan, or heikō yunyū (並行輸入), a parallel import bought abroad and brought into Japan. Both are genuine. Domestic watches carry a Japanese dealer's stamp on the guarantee and often come with a Japanese receipt.
What to check
- The reference and serial on the watch match the guarantee card.
- Dial, hands and bezel are correct for the reference.
- The bracelet and end links belong to the model.
- Service history, and whether parts were replaced.
Read Buying a Watch from Japan for a full checklist, and Rolex Serial Numbers and Production Years to date a watch.
Questions collectors ask
Where is the reference engraved?
On most Rolex watches, between the lugs at twelve o'clock, visible when the bracelet is removed. Newer watches also print it on the guarantee card.
Is a parallel-import watch less valuable?
Usually not significantly. Completeness and condition matter more.