Reference:bubbleback: Difference between revisions

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== Pre-Perpetual Oyster ~~(1926–1932)~~ ==

== Pre-Perpetual Oyster ==

Before the Bubbleback, Rolex produced manual-wind Oysters ~~in the 1926 case form~~. ~~Most carried~~ 10½-~~ligne~~ or 9¾-ligne Aegler Hunter movements at Prima, Extra Prima, or Ultra Prima grades. Glasgow import hallmarks ~~are common~~ on British-market examples~~. The movement architecture is traditional manual wind~~; the case ~~is already recognizably Oyster~~.

Before the Bubbleback, Rolex produced manual-wind Oysters. Auction catalogues identify several with 10½- or 9¾-ligne Aegler Hunter movements at Prima, Extra Prima or Ultra Prima grades. Ref. [[Reference:1925|1925]] lots also name Prima and Ultra Prima grades, but do not assign a numeric caliber. Glasgow import hallmarks recur on British-market examples; the assay date belongs to the case, not necessarily the watch’s manufacture.

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! Reference !! Production !! Movement !! Case !! Key distinction

|-

| [[Reference:1925|1925]] || Christie’s dates examples circa 1925, 1928 and to the 1930s; Antiquorum: 1920s; production span unknown || Prima (9′′′/15j and six-position description) and Ultra Prima (15j); caliber unconfirmed || Cushion, faceted tonneau and octagonal; 28 × 28 to 32 × 31mm; gold, silver, nickel || Several lot-specific dials; Bonhams calls 260554 a case number, while an early Oyster caseback shows 260554/1925 as a patent marking

| [[Reference:2081|2081]] || Auction dates range from the 1920s to 1948; span unproved || 10-ligne/15-jewel Prima and 10½-ligne/17-jewel lots; one 1947 lot names Cal. 700, 10½-ligne/15-jewel Extra-Prima || Cushion, 31–32mm; stainless steel, 9K gold and chrome-plated examples || “Standard Oyster,” “Oyster Imperial” and “Oyster Chronometer” catalogue labels; Antiquorum’s steel-only note conflicts with gold and chrome-plated lots

| [[Reference:1069|1069]] || Antiquorum dates lots to 1920s; Christie's circa 1930; span unproved || Manual; 11-ligne/15j movement reported once; other descriptions differ || Cushion; catalogued 30–32mm, steel and silver-plated examples || Solar Aqua/Anti-Magnetic dial; caseback 21836 has a conflicting 1940s seller date

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! Reference !! Production !! Movement !! Case !! Key distinction

|-

| [[Reference:1573|1573]] || Auction examples dated circa 1930 through the 1940s; production span unknown || Manual; 15 jewels shown in an auction photograph; caliber unconfirmed || Tonneau/tortue; 28–29 × 38–39mm across catalogues; steel, steel/gold-bezel and 9ct gold examples || BEYER-signed black dial and Dobbies attribution documented; Imperial and Viceroy are sale names, not established production variants

|-

| [[Reference:3139|3139]] || c.1940–1942 || 10½′′′ Hunter, manual || 32mm cushion Oyster, 3-piece || Only Rolex with "Army" on the dial; cushion case in the Borgel-derived 1920s family; documented British military and civilian examples

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-== Pre-Perpetual Oyster (1926–1932) ==
+== Pre-Perpetual Oyster ==
-Before the Bubbleback, Rolex produced manual-wind Oysters in the 1926 case form. Most carried 10½-ligne or 9¾-ligne Aegler Hunter movements at Prima, Extra Prima, or Ultra Prima grades. Glasgow import hallmarks are common on British-market examples. The movement architecture is traditional manual wind; the case is already recognizably Oyster.
+Before the Bubbleback, Rolex produced manual-wind Oysters. Auction catalogues identify several with 10½- or 9¾-ligne Aegler Hunter movements at Prima, Extra Prima or Ultra Prima grades. Ref. [[Reference:1925|1925]] lots also name Prima and Ultra Prima grades, but do not assign a numeric caliber. Glasgow import hallmarks recur on British-market examples; the assay date belongs to the case, not necessarily the watch’s manufacture.
 {| class="wikitable" style="width:100%;"
@@ Line 48: / Line 48: @@
 ! Reference !! Production !! Movement !! Case !! Key distinction
 |-
+| [[Reference:1925|1925]] || Christie’s dates examples circa 1925, 1928 and to the 1930s; Antiquorum: 1920s; production span unknown || Prima (9′′′/15j and six-position description) and Ultra Prima (15j); caliber unconfirmed || Cushion, faceted tonneau and octagonal; 28 × 28 to 32 × 31mm; gold, silver, nickel || Several lot-specific dials; Bonhams calls 260554 a case number, while an early Oyster caseback shows 260554/1925 as a patent marking
+| [[Reference:2081|2081]] || Auction dates range from the 1920s to 1948; span unproved || 10-ligne/15-jewel Prima and 10½-ligne/17-jewel lots; one 1947 lot names Cal. 700, 10½-ligne/15-jewel Extra-Prima || Cushion, 31–32mm; stainless steel, 9K gold and chrome-plated examples || “Standard Oyster,” “Oyster Imperial” and “Oyster Chronometer” catalogue labels; Antiquorum’s steel-only note conflicts with gold and chrome-plated lots
 | [[Reference:1069|1069]] || Antiquorum dates lots to 1920s; Christie's circa 1930; span unproved || Manual; 11-ligne/15j movement reported once; other descriptions differ || Cushion; catalogued 30–32mm, steel and silver-plated examples || Solar Aqua/Anti-Magnetic dial; caseback 21836 has a conflicting 1940s seller date
 |-
@@ Line 68: / Line 70: @@
 |-
 ! Reference !! Production !! Movement !! Case !! Key distinction
+|-
+| [[Reference:1573|1573]] || Auction examples dated circa 1930 through the 1940s; production span unknown || Manual; 15 jewels shown in an auction photograph; caliber unconfirmed || Tonneau/tortue; 28–29 × 38–39mm across catalogues; steel, steel/gold-bezel and 9ct gold examples || BEYER-signed black dial and Dobbies attribution documented; Imperial and Viceroy are sale names, not established production variants
 |-
 | [[Reference:3139|3139]] || c.1940–1942 || 10½′′′ Hunter, manual || 32mm cushion Oyster, 3-piece || Only Rolex with "Army" on the dial; cushion case in the Borgel-derived 1920s family; documented British military and civilian examples