Reference:116518: Difference between revisions

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Cal 4130 is Rolex's first wholly in-house chronograph movement. Thirty-seven years of bought-in chronograph bases — the Valjoux 72 family from 1963, the Zenith El Primero base from 1988 — ended when the 4130 launched in 2000 across the five-configuration cal 4130 Daytona family. The 116518 is the leather-strap point of entry into that transition.

The practical difference is not only the longer reserve. In use, the vertical clutch gives the chronograph seconds hand a clean start without the jump associated with lateral-clutch chronographs, and period hands-on reporting found the 4130-generation Daytona holding tight daily rates even with frequent chronograph use. That is why the 116518 should not be treated as merely a gold 16518 with a new reference number: the dial layout, register positions, and chronograph feel all belong to the 4130 architecture.

For the full caliber lineage and the 4030-to-4130 architecture comparison, see [[Reference:Movements#cal-4130]].

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The 116518 is a leather-strap reference. Every documented original-equipment example shipped on alligator leather with an 18k yellow gold deployant buckle. No factory Oyster bracelet was offered for the 116518 — that configuration is the [[Reference:116528|116528]]. Aftermarket gold Oyster fitments do appear on individual 116518 cases at the dealer tier, generally pulled from a 116528 or a Day-Date 18238 and refitted to the 20mm 116518 lug spacing. These reconfigurations are not original delivery and trade as such on the secondary market.

The preceding 16518 used fixed gold end pieces between case and strap, a precious-metal Daytona detail the steel references never carried. The 116518 inherits the same originality burden: a correct watch head can sit on a replaced strap, end-link, or deployant, so each component has to be verified individually rather than assumed correct from the presence of leather alone.

The deployant buckle is 18k yellow gold throughout the run, in the standard Rolex deployant geometry of the period. Strap material was always alligator from Rolex, with black, brown, and burgundy as standard colours and other tones available through the catalogue. Strap is a wear item; owners typically replaced it multiple times across the watch's life, and a surviving 116518 with its original Rolex-stamped strap and the original deployant in untampered condition is the period-correct configuration. A later aftermarket strap with the original deployant is the more common surviving form, and a fully refurbished strap-and-deployant set with no original Rolex components is normal at the dealer tier.

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===Tiffany & Co. and other double-signed dials===

~~Tiffany~~-signed ~~116518s appear sporadically at major auction houses, following~~ the ~~broader~~ Tiffany-~~signed Rolex tradition of~~ the ~~period~~. The signature is applied on the dial below the 6 o'clock Cosmograph block, on the standard champagne or black layouts. Cartier-signed and Vacheron-signed examples on the cal 4130 yellow gold Daytona references are thinner on the ground than in the Zenith-era 16518 catalogue — by the 2000s, the double-signed Rolex phenomenon had narrowed considerably as retailer dial programmes ended at most of the historical partners. No 116518-specific double-signed lot anchors a market-grade record in the published literature comparable to Phillips's Van Cleef & Arpels "Le Roi Soleil" 16518 (Daytona Ultimatum, Geneva, 12 May 2018, Lot 18).

Double-signed dials are a weakly documented area for the 116518. The better-published Tiffany Daytona material sits with earlier references, especially manual-wind and Zenith-era watches, so any six-digit 116518 double signature needs original-sale documentation or major-house cataloguing before it belongs in the reference taxonomy. The signature is applied on the dial below the 6 o'clock Cosmograph block, on the standard champagne or black layouts. Cartier-signed and Vacheron-signed examples on the cal 4130 yellow gold Daytona references are thinner on the ground than in the Zenith-era 16518 catalogue — by the 2000s, the double-signed Rolex phenomenon had narrowed considerably as retailer dial programmes ended at most of the historical partners. No 116518-specific double-signed lot anchors a market-grade record in the published literature comparable to Phillips's Van Cleef & Arpels "Le Roi Soleil" 16518 (Daytona Ultimatum, Geneva, 12 May 2018, Lot 18).

===Beach dial sub-branches===

@@ Line 92: / Line 92: @@
 Cal 4130 is Rolex's first wholly in-house chronograph movement. Thirty-seven years of bought-in chronograph bases — the Valjoux 72 family from 1963, the Zenith El Primero base from 1988 — ended when the 4130 launched in 2000 across the five-configuration cal 4130 Daytona family. The 116518 is the leather-strap point of entry into that transition.
+The practical difference is not only the longer reserve. In use, the vertical clutch gives the chronograph seconds hand a clean start without the jump associated with lateral-clutch chronographs, and period hands-on reporting found the 4130-generation Daytona holding tight daily rates even with frequent chronograph use. That is why the 116518 should not be treated as merely a gold 16518 with a new reference number: the dial layout, register positions, and chronograph feel all belong to the 4130 architecture.
 For the full caliber lineage and the 4030-to-4130 architecture comparison, see [[Reference:Movements#cal-4130]].
@@ Line 163: / Line 165: @@
 The 116518 is a leather-strap reference. Every documented original-equipment example shipped on alligator leather with an 18k yellow gold deployant buckle. No factory Oyster bracelet was offered for the 116518 — that configuration is the [[Reference:116528|116528]]. Aftermarket gold Oyster fitments do appear on individual 116518 cases at the dealer tier, generally pulled from a 116528 or a Day-Date 18238 and refitted to the 20mm 116518 lug spacing. These reconfigurations are not original delivery and trade as such on the secondary market.
+The preceding 16518 used fixed gold end pieces between case and strap, a precious-metal Daytona detail the steel references never carried. The 116518 inherits the same originality burden: a correct watch head can sit on a replaced strap, end-link, or deployant, so each component has to be verified individually rather than assumed correct from the presence of leather alone.
 The deployant buckle is 18k yellow gold throughout the run, in the standard Rolex deployant geometry of the period. Strap material was always alligator from Rolex, with black, brown, and burgundy as standard colours and other tones available through the catalogue. Strap is a wear item; owners typically replaced it multiple times across the watch's life, and a surviving 116518 with its original Rolex-stamped strap and the original deployant in untampered condition is the period-correct configuration. A later aftermarket strap with the original deployant is the more common surviving form, and a fully refurbished strap-and-deployant set with no original Rolex components is normal at the dealer tier.
@@ Line 174: / Line 178: @@
 ===Tiffany & Co. and other double-signed dials===
-Tiffany-signed 116518s appear sporadically at major auction houses, following the broader Tiffany-signed Rolex tradition of the period. The signature is applied on the dial below the 6 o'clock Cosmograph block, on the standard champagne or black layouts. Cartier-signed and Vacheron-signed examples on the cal 4130 yellow gold Daytona references are thinner on the ground than in the Zenith-era 16518 catalogue — by the 2000s, the double-signed Rolex phenomenon had narrowed considerably as retailer dial programmes ended at most of the historical partners. No 116518-specific double-signed lot anchors a market-grade record in the published literature comparable to Phillips's Van Cleef & Arpels "Le Roi Soleil" 16518 (Daytona Ultimatum, Geneva, 12 May 2018, Lot 18).
+Double-signed dials are a weakly documented area for the 116518. The better-published Tiffany Daytona material sits with earlier references, especially manual-wind and Zenith-era watches, so any six-digit 116518 double signature needs original-sale documentation or major-house cataloguing before it belongs in the reference taxonomy. The signature is applied on the dial below the 6 o'clock Cosmograph block, on the standard champagne or black layouts. Cartier-signed and Vacheron-signed examples on the cal 4130 yellow gold Daytona references are thinner on the ground than in the Zenith-era 16518 catalogue — by the 2000s, the double-signed Rolex phenomenon had narrowed considerably as retailer dial programmes ended at most of the historical partners. No 116518-specific double-signed lot anchors a market-grade record in the published literature comparable to Phillips's Van Cleef & Arpels "Le Roi Soleil" 16518 (Daytona Ultimatum, Geneva, 12 May 2018, Lot 18).
 ===Beach dial sub-branches===