Reference:Movements: Difference between revisions

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<div class="rp-era"><div class="rp-era-name">Vintage sport (1950s–80s)</div><div class="rp-chips">[[#cal-1030|1030]] [[#cal-1035|1035]] [[#cal-1036|1036]] [[#cal-1065|1065]] [[#cal-1066|1066]] [[#cal-1530|1530]] [[#cal-1520|1520]] [[#cal-1535|1535]] [[#cal-1525|1525]] [[#cal-1560|1560]] [[#cal-1565|1565]] [[#cal-1570|1570]] [[#cal-1575|1575]]</div></div>

<div class="rp-era"><div class="rp-era-name">Modern sport (1988–2023 coverage)</div><div class="rp-chips">[[#cal-3000|3000]] [[#cal-3035|3035]] [[#cal-3075|3075]] [[#cal-3085|3085]] [[#cal-3130|3130]] [[#cal-3132|3132]] [[#cal-3135|3135]] [[#cal-3175|3175]] [[#cal-3185|3185]] [[#cal-3186|3186]] [[#cal-3187|3187]] [[#cal-3230|3230]] [[#cal-3235|3235]] [[#cal-3285|3285]]</div></div>

<div class="rp-era"><div class="rp-era-name">Milgauss</div><div class="rp-chips">[[#cal-1580|1580]] [[#cal-3131|3131]]</div></div>

<div class="rp-era"><div class="rp-era-name">Milgauss</div><div class="rp-chips">[[#cal-1080|1080]] [[#cal-1580|1580]] [[#cal-3131|3131]]</div></div>

<div class="rp-era"><div class="rp-era-name">Early chronograph</div><div class="rp-chips">[[#cal-13|13]]</div></div>

<div class="rp-era"><div class="rp-era-name">Daytona chronograph</div><div class="rp-chips">[[#cal-72|72]] [[#cal-72a|72A]] [[#cal-72b|72B]] [[#cal-722|722]] [[#cal-722-1|722-1]] [[#cal-727|727]] [[#cal-4030|4030]] [[#cal-4130|4130]] [[#cal-4131|4131]] [[#cal-4132|4132]]</div></div>

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== Milgauss ==

~~Rolex introduced~~ the ~~documented Milgauss calibers about fifty years apart~~. ~~Rolex adapted its contemporary sport movements for the Milgauss:~~ Cal. 1580 derives from the 1530 platform~~, and~~ Cal. 3131 from Cal. 3130.

Auction catalogues assign Cal. 1080 to early Milgauss examples, though a later catalogue labels the same 6541 movement number Cal. 1055. Cal. 1580 derives from the 1530 platform; Cal. 3131 derives from Cal. 3130.

=== Cal. 1080 ===

{| class="wikitable" style="width:280px; font-size:90%;"

! detail

! value

|-

| type

| Automatic

|-

| jewels

| 25 listed for Christie’s case 145'111 and Sotheby’s case 412'479

|-

| documented fitment

| Milgauss 6543 and 6541 examples; one 6541 movement number carries conflicting 1080 / 1055 catalogue labels

|-

| base relationship

| Revolution describes it as modified from Cal. 1030

|}

Christie’s lists Cal. 1080 in 6543 case 145'111. Revolution also assigns the caliber to the 6543 and describes a Cal. 1030 relationship. Sotheby’s called movement N726507 in 6541 case 412'479 Cal. 1080 in 2018; Phillips listed the same case and movement number as Cal. 1055 in 2026. The surviving catalogues document these watch-level labels, not a settled specification or changeover sequence.

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* [https://www.emmywatch.com EmmyWatch — vintage restoration movement photography]

* [https://monochrome-watches.com/complete-history-of-the-rolex-milgauss/ Monochrome — Complete History of the Rolex Milgauss]

* [https://www.christies.com/en/lot/lot-6067487 Christie’s, ref. 6543 case 145'111, Cal. 1080]

* [https://www.christies.com/lot/lot-5612347 Christie’s, ref. 6543 case 145'159, Cal. 1065]

* [https://revolutionwatch.com/rolex-milgauss-one-in-a-thousand/ Revolution, Milgauss movement and 6543 history]

* [https://www.sothebys.com/en/auctions/ecatalogue/2018/important-watches-n09952/lot.256.html Sotheby’s, 6541 case 412'479, Cal. 1080]

* [https://www.phillips.com/detail/rolex/206388 Phillips, same case and movement number, Cal. 1055]

* [https://www.robbreport.com/style/watch-collector/most-expensive-rolex-watches-ever-sold-at-auction/ Robb Report — The Most Expensive Rolex Watches Ever Sold at Auction] (Sotheby's Mercedes Gleitze Oyster, November 2025)

* [https://catalog.antiquorum.swiss Antiquorum — auction lot catalogue]

@@ Line 20: / Line 20: @@
 <div class="rp-era"><div class="rp-era-name">Vintage sport (1950s–80s)</div><div class="rp-chips">[[#cal-1030|1030]] [[#cal-1035|1035]] [[#cal-1036|1036]] [[#cal-1065|1065]] [[#cal-1066|1066]] [[#cal-1530|1530]] [[#cal-1520|1520]] [[#cal-1535|1535]] [[#cal-1525|1525]] [[#cal-1560|1560]] [[#cal-1565|1565]] [[#cal-1570|1570]] [[#cal-1575|1575]]</div></div>
 <div class="rp-era"><div class="rp-era-name">Modern sport (1988–2023 coverage)</div><div class="rp-chips">[[#cal-3000|3000]] [[#cal-3035|3035]] [[#cal-3075|3075]] [[#cal-3085|3085]] [[#cal-3130|3130]] [[#cal-3132|3132]] [[#cal-3135|3135]] [[#cal-3175|3175]] [[#cal-3185|3185]] [[#cal-3186|3186]] [[#cal-3187|3187]] [[#cal-3230|3230]] [[#cal-3235|3235]] [[#cal-3285|3285]]</div></div>
-<div class="rp-era"><div class="rp-era-name">Milgauss</div><div class="rp-chips">[[#cal-1580|1580]] [[#cal-3131|3131]]</div></div>
+<div class="rp-era"><div class="rp-era-name">Milgauss</div><div class="rp-chips">[[#cal-1080|1080]] [[#cal-1580|1580]] [[#cal-3131|3131]]</div></div>
 <div class="rp-era"><div class="rp-era-name">Early chronograph</div><div class="rp-chips">[[#cal-13|13]]</div></div>
 <div class="rp-era"><div class="rp-era-name">Daytona chronograph</div><div class="rp-chips">[[#cal-72|72]] [[#cal-72a|72A]] [[#cal-72b|72B]] [[#cal-722|722]] [[#cal-722-1|722-1]] [[#cal-727|727]] [[#cal-4030|4030]] [[#cal-4130|4130]] [[#cal-4131|4131]] [[#cal-4132|4132]]</div></div>
@@ Line 1,966: / Line 1,966: @@
 == Milgauss ==
-Rolex introduced the documented Milgauss calibers about fifty years apart. Rolex adapted its contemporary sport movements for the Milgauss: Cal. 1580 derives from the 1530 platform, and Cal. 3131 from Cal. 3130.
+Auction catalogues assign Cal. 1080 to early Milgauss examples, though a later catalogue labels the same 6541 movement number Cal. 1055. Cal. 1580 derives from the 1530 platform; Cal. 3131 derives from Cal. 3130.
+<span id="cal-1080"></span>
+=== Cal. 1080 ===
+{| class="wikitable" style="width:280px; font-size:90%;"
+! detail
+! value
+|-
+| type
+| Automatic
+|-
+| jewels
+| 25 listed for Christie’s case 145'111 and Sotheby’s case 412'479
+|-
+| documented fitment
+| Milgauss 6543 and 6541 examples; one 6541 movement number carries conflicting 1080 / 1055 catalogue labels
+|-
+| base relationship
+| Revolution describes it as modified from Cal. 1030
+|}
+Christie’s lists Cal. 1080 in 6543 case 145'111. Revolution also assigns the caliber to the 6543 and describes a Cal. 1030 relationship. Sotheby’s called movement N726507 in 6541 case 412'479 Cal. 1080 in 2018; Phillips listed the same case and movement number as Cal. 1055 in 2026. The surviving catalogues document these watch-level labels, not a settled specification or changeover sequence.
 <span id="cal-1580"></span>
@@ Line 2,886: / Line 2,907: @@
 * [https://www.emmywatch.com EmmyWatch — vintage restoration movement photography]
 * [https://monochrome-watches.com/complete-history-of-the-rolex-milgauss/ Monochrome — Complete History of the Rolex Milgauss]
+* [https://www.christies.com/en/lot/lot-6067487 Christie’s, ref. 6543 case 145'111, Cal. 1080]
+* [https://www.christies.com/lot/lot-5612347 Christie’s, ref. 6543 case 145'159, Cal. 1065]
+* [https://revolutionwatch.com/rolex-milgauss-one-in-a-thousand/ Revolution, Milgauss movement and 6543 history]
+* [https://www.sothebys.com/en/auctions/ecatalogue/2018/important-watches-n09952/lot.256.html Sotheby’s, 6541 case 412'479, Cal. 1080]
+* [https://www.phillips.com/detail/rolex/206388 Phillips, same case and movement number, Cal. 1055]
 * [https://www.robbreport.com/style/watch-collector/most-expensive-rolex-watches-ever-sold-at-auction/ Robb Report — The Most Expensive Rolex Watches Ever Sold at Auction] (Sotheby's Mercedes Gleitze Oyster, November 2025)
 * [https://catalog.antiquorum.swiss Antiquorum — auction lot catalogue]