Rolex

Datejust 36 Rolesor (five-digit)

Name: Rolex Datejust 36 Rolesor (five-digit) 16013
Brand: Rolex
SKU: 16013

Ref. 16013

1977–1988 · 36mm · caliber Rolex Cal. 3035: in-house automatic, 27j; the first Rolex calendar caliber with a quickset date, set from the crown instead of by winding the hands round

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Uncommon

Originality

Originality matters on this reference. An original dial and hands command a significant premium. Service replacements typically trade at a 20-40% discount to original examples.

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In-house manufacture caliber · caliber Rolex Cal. 3035: in-house automatic, 27j; the first Rolex calendar caliber with a quickset date, set from the crown instead of by winding the hands round

Small case: suits slender wrists (under 6.5 in / 16.5 cm)

36 mm case. A compact, elegant wear. Particularly at home on narrower wrists where larger cases can overhang.

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Authentication

The two-tone Datejust is common enough that outright counterfeits are less of a risk than aftermarket parts. Diamond dials, bezels and bracelets fitted outside Rolex are the main thing to identify.

Known issues in the market

Aftermarket diamond-set bezels and dials are widespread on this reference and are often described as factory. They change the value considerably.
Gold-plated aftermarket parts are sometimes fitted alongside genuine solid gold ones, so the gold on the bezel, crown and bracelet centre links should be checked as a set.
Dial refinishing is common on forty-year-old Datejusts and is frequently not disclosed.

Area	What to check	What is correct	Red flag
case	Fluted 18k yellow gold bezel	A solid gold fluted bezel whose flutes are evenly cut and whose colour matches the crown and the bracelet centre links	Wear through to steel at the flute peaks, or a bezel whose gold tone does not match the crown and bracelet
crystal	Acrylic crystal with cyclops	An acrylic crystal, correct for the five-digit generation, with the cyclops magnifying the date	A sapphire crystal, which belongs to the later 16234 rather than to the 16013
movement	Caliber 3035 quickset date	A 27-jewel cal. 3035 whose date advances from the crown in an intermediate position rather than by winding the hands round	A date that can only be set by turning the hands past midnight, which points to an earlier non-quickset caliber and a mismatched case
dial	Dial printing and index setting	Even printing with applied indices seated flush, and a dial code consistent with the reference	Aftermarket diamond indices, uneven index feet, or printing that has been thickened by refinishing
bracelet	Two-tone Jubilee bracelet and clasp	A Rolex-signed clasp with a code at or after the case date, and gold centre links matching the bezel in tone	An unsigned clasp, a clasp code earlier than the case, or plated centre links wearing through at the edges
case	Reference and serial between the lugs	A 16013 reference between the lugs at twelve and a serial at six, both legible	A different reference, or numbers worn shallow by polishing

Common legitimate replacements

Acrylic crystals are replaced routinely and carry no originality penalty.
Jubilee bracelets stretch and are frequently swapped between Datejusts. A stretched bracelet is wear, not a red flag, but the clasp code should still make sense against the case.

Expert resources: Sotheby’s publishes lot text for this reference with caliber, case and bracelet detail. Monochrome’s history of the Datejust sets out what the five-digit generation changed, which is the quickest way to tell a 16013 from the sapphire-crystal 16234 that followed it.