Rolex Day-Date 18078

A checked version of this page, approved on 16 June 2026, was based on this revision.

Day-Date → 18078

The 18078 is the bark-finish Day-Date of the sapphire-crystal era, the 5-digit successor to the 4-digit bark 1807. It is a yellow-gold President whose bezel and bracelet centre links carry the coarse vertical "bark" texture, écorce in French, while the case flanks stay polished. Caliber 3055, sapphire crystal, made from the late 1970s to 1988. The bark drew few buyers when new and Rolex built it in small numbers, which makes it the scarcer of the 5-digit finishes today. The examples that command attention pair the bark case with an exotic dial: wood, hardstone, lacquered Stella, or an Omani Khanjar.

Core facts

detail	value
reference	18078
family	Day-Date
production	circa 1977/78 to 1988
movement	caliber 3055, 27 jewels, 28,800 vph, single quickset (date); sapphire era
case	36mm 18k yellow gold President
crystal	sapphire
bezel	bark (écorce) finish
bracelet	President 8385 with bark-finished centre links, hidden Crownclasp, solid links
dial	champagne and silver stick most common; wood/burl, hardstone, Stella, Roman, diamond-index, Khanjar
crown	Twinlock screw-down
siblings	18038 (fluted), 18048 (diamond), 18079 (white-gold bark), 18039 / 18049 (white-gold fluted / diamond)
predecessor	1807 (4-digit bark)
successor	caliber-3155 bark references (scarce)

Where it sits in the line

The 18078 is the bark member of the first 5-digit Day-Date generation, the sapphire-crystal continuation of the bark thread that runs from the 4-digit 1807. The 5-digit references split by metal and finish: the 18038 is the yellow-gold fluted volume reference, the 18048 carries the diamond bezel, and the bark follows in yellow gold as the 18078 and in white gold as the 18079. The bark is the coarse, vertical, tree-bark texture, distinct from the finer cross-hatched Florentine of the 1806 and the watered moiré Morellis of the 1811. Everything behind the finish is 18038: the same case, caliber 3055, sapphire crystal and President bracelet. The bark never caught on the way the fluting did, so the 18078 is the scarcest of the standard 5-digit finishes, and the textured look that limited it when new is most of its appeal now.

Production outline

The 18078 ran from the late 1970s, when the 5-digit references took over with sapphire crystals and the caliber 3055, until 1988, when the caliber 3155 arrived. The bark finish continued in small numbers into the caliber-3155 era, but it is most associated with this 18078/18079 generation. No Rolex production figure has surfaced; the scarcity collectors cite is drawn from how rarely the reference appears rather than from any factory data. The bark sold slowly when new, which is precisely why it is uncommon today. Within the run the reference is a stable, single-spec watch, and its variety lives in the dial rather than in any change to the case or movement.

Movement notes

The 18078 runs the caliber 3055, the first quickset Day-Date movement: 27 jewels, 28,800 vph, with a date quickset from the crown. The day still has to be advanced by running the hands through midnight, since the day quickset did not arrive until the caliber 3155 in 1988. The movement is the shared sapphire-era Day-Date caliber, COSC-certified and identical to the one in the fluted 18038 and the diamond 18048; the bark changes the surface of the gold, not the watch underneath. The Reference:Movements page holds the caliber lineage, and the 18038 entry covers the 3055 in detail.

Dial map

A bark 18078 with a tiger-eye hardstone dial — the textured case is collected as a pairing with an exotic dial.

The bark is the constant on the 18078; the dial is where the variety lives, and the most collected examples pair the textured case with an exotic dial. The common configuration is a champagne or silvered stick dial. Beyond that the reference is closely associated with wood and burl dials, birch, mahogany, walnut and burlwood, which suit the organic bark texture and are the signature pairing. Hardstone dials in onyx, tiger-eye and lapis appear from the early-1980s exotic-dial window, lacquered Stella colours such as burgundy and blue turn up with diamond markers, and Roman-numeral and diamond-index dials round out the range. A champagne 18078 carrying the Omani Khanjar emblem and an Arabic day disc documents the reference's reach into the Gulf special orders. The deep dial taxonomy that spans the President line sits on the 1803 entry; on the 18078 the dial is the identity of the individual watch.

Case, bezel, crystal, and crown

The case is the 36mm yellow-gold Oyster shared across the 5-digit Day-Date, with a sapphire crystal and Cyclops, a Twinlock screw-down crown and a screw-down caseback. The defining feature is the bark finish, a coarse vertical woodgrain worked into the bezel. The case flanks and lugs stay polished, so the texture reads as a deliberate band around the dial rather than an all-over treatment. The bark is coarser and more organic than the fine Florentine cross-hatch of the 1806 and unlike the rippled moiré of the 1811, the three textured finishes that Rolex offered across the President line.

Bracelets, end links, and clasps

The 18078 wears the President bracelet, reference 8385, with the concealed Crownclasp and the solid links of the 5-digit era. The bark carries onto the bracelet's centre links, so the texture runs from the bezel down the length of the bracelet rather than stopping at the case. That continuity is much of the reference's look, and a bark 18078 that keeps its original bark centre links rather than service-replaced plain ones is the complete expression of the watch. As with any President, a clasp date code dates the bracelet rather than the head, and the cross-family detail sits on Reference:Bracelets.

Special branches

Bark with an exotic dial

The bark 18078 is collected as a case-and-dial pairing. The wood and burl dials are the signature, birch, mahogany and burlwood grounds that echo the bark texture, and they are the configurations the major houses catalogue most often. Hardstone dials in onyx and tiger-eye, lacquered Stella colours in burgundy and blue, and diamond-set dials all appear on the bark case. On a reference this scarce, the dial is what separates one 18078 from the next and what drives the result.

The Omani Khanjar

A bark 18078 carrying the green Omani Khanjar emblem and an Arabic day disc — the textured case turned to a Gulf special order.

A bark 18078 with the green Omani Khanjar emblem and an Arabic day disc, catalogued by Phillips, places the reference in the Gulf special-order tradition alongside the platinum Arabic Day-Dates. It is the bark case turned to a Middle-Eastern commission, and a reminder that the textured references reached the same clientele as the platinum ones.

Auction record

The 18078 is thinly represented at the major houses, and where it appears the dial usually drives the lot rather than the bark head itself. Antiquorum sold a tiger-eye example in Hong Kong in 2015 for HKD 237,500 and an onyx example with a bark-and-diamond bezel in Geneva in 2016 for CHF 18,750. Sotheby's catalogued a burgundy-Stella diamond example in 2018, which went unsold, and a birch wood-dial example in 2023. A blue-Stella diamond 18078 in Hong Kong in 2024 shows the kind of result the special dials reach: the lot page reads unsold, while a Sotheby's editorial article records it selling for HKD 336,000. A plain champagne or silver bark 18078 sits at a more modest level, roughly the low-to-mid five figures in dollars, at or slightly below a comparable plain fluted 18038, with the textured look still a divisive, period-specific taste. The premium appears when the bark is paired with a wood, stone or Stella dial.

date	house	configuration	result
2015	Antiquorum Hong Kong, lot 661	tiger-eye dial	HKD 237,500
2016	Antiquorum Geneva, lot 467	onyx dial, bark-and-diamond bezel	CHF 18,750
2018	Sotheby's Geneva, lot 223	burgundy Stella diamond dial	unsold
2023	Sotheby's Fine Watches, lot 205	"Birch" wood dial	published lot reference
2024	Sotheby's Hong Kong, lot 2106	blue Stella diamond dial	HKD 336,000 per Sotheby's editorial; lot page reads unsold