Reference:5031: Difference between revisions

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== What the 5031 is ==

The 5031 is ~~a 36mm Big Bubbleback Datejust in 18K~~ pink gold~~, made for approximately one year in 1948. Structurally it shares~~ the 5030 ~~at every level~~: ~~case shape~~, movement, ~~bezel, crystal, crown style, dial architecture. The difference is case metal and~~, ~~by extension, matching hands and markers~~ in pink gold. Within the Ovettone sequence the 5031 occupies the same position as its yellow-gold twin, directly after the 4467 and directly before the 60xx references. [https://le-monde-edmond.com/datejust-a-closer-look-at-a-rolex-icon-2/ Le Monde Edmond] (2022) and Italian auction houses use "Ovettone" for the whole Big Bubbleback cluster including the 50xx pair; the narrower dealer reading restricting the term to 4467/6031/6074/6075 would exclude the 5031.

The 5031 is the pink-gold twin to the 5030: same 36mm Big Bubbleback Datejust architecture, same movement, same transitional place in the line, but in 18k pink gold.

Pink and rose gold dress watches were a European preference through the 1940s. Markets in France, Italy, Switzerland, and German-speaking Europe favoured pink for formal wear, and Rolex produced pink-gold twins of most Ovettone references to meet that demand. Survival rates on the pink variants run below yellow, because pink alloys of the period were softer and more prone to polishing-out at service.

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== Movement: Cal. A.295 ==

Same as the 5030: ~~Cal~~. A.295, the automatic movement that powered the 4467 from 1945 and carries through the 50xx transitional pair into the 6030/6031 of 1949. 29.5mm diameter (the “295”). Rolex parts catalogues cross-list the movement within the 740 / 745 family~~: Cal. 740 for the base grade, Cal. 745 for the Chronometer grade. Self-winding Perpetual rotor, 18 jewels, Rolex Superbalance, Breguet overcoil hairspring~~, center seconds, date~~. No~~ shock protection~~. No quickset. Slow creep at midnight~~ rather than ~~instantaneous snap-change; the~~ snap-change ~~arrives with Cal. 1065 in 1956–57 and ends the Bubbleback silhouette~~.

Same as the 5030 mechanically: cal. A.295 in the 740/745 family, with center seconds, date, no shock protection, and the old slow date change rather than a later snap change.

Dial feet positions are specific to the A.295 and differ from the A.296 used in ref 6105 and later. A 5031 dial on an A.296 movement is not period-correct. The Vintage Rolex Forum documentation by specialist Xeramic (thread t-274914) is the standard reference on this check.

@@ Line 69: / Line 69: @@
 == What the 5031 is ==
-The 5031 is a 36mm Big Bubbleback Datejust in 18K pink gold, made for approximately one year in 1948. Structurally it shares the 5030 at every level: case shape, movement, bezel, crystal, crown style, dial architecture. The difference is case metal and, by extension, matching hands and markers in pink gold. Within the Ovettone sequence the 5031 occupies the same position as its yellow-gold twin, directly after the 4467 and directly before the 60xx references. [https://le-monde-edmond.com/datejust-a-closer-look-at-a-rolex-icon-2/ Le Monde Edmond] (2022) and Italian auction houses use "Ovettone" for the whole Big Bubbleback cluster including the 50xx pair; the narrower dealer reading restricting the term to 4467/6031/6074/6075 would exclude the 5031.
+The 5031 is the pink-gold twin to the 5030: same 36mm Big Bubbleback Datejust architecture, same movement, same transitional place in the line, but in 18k pink gold.
 Pink and rose gold dress watches were a European preference through the 1940s. Markets in France, Italy, Switzerland, and German-speaking Europe favoured pink for formal wear, and Rolex produced pink-gold twins of most Ovettone references to meet that demand. Survival rates on the pink variants run below yellow, because pink alloys of the period were softer and more prone to polishing-out at service.
@@ Line 99: / Line 99: @@
 == Movement: Cal. A.295 ==
-Same as the 5030: Cal. A.295, the automatic movement that powered the 4467 from 1945 and carries through the 50xx transitional pair into the 6030/6031 of 1949. 29.5mm diameter (the “295”). Rolex parts catalogues cross-list the movement within the 740 / 745 family: Cal. 740 for the base grade, Cal. 745 for the Chronometer grade. Self-winding Perpetual rotor, 18 jewels, Rolex Superbalance, Breguet overcoil hairspring, center seconds, date. No shock protection. No quickset. Slow creep at midnight rather than instantaneous snap-change; the snap-change arrives with Cal. 1065 in 1956–57 and ends the Bubbleback silhouette.
+Same as the 5030 mechanically: cal. A.295 in the 740/745 family, with center seconds, date, no shock protection, and the old slow date change rather than a later snap change.
 Dial feet positions are specific to the A.295 and differ from the A.296 used in ref 6105 and later. A 5031 dial on an A.296 movement is not period-correct. The Vintage Rolex Forum documentation by specialist Xeramic (thread t-274914) is the standard reference on this check.