Reference:Movements: Difference between revisions

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For [[Reference:1073|ref. 1073]], Antiquorum names a 10½-ligne Extra Prima movement with 15 jewels. David Boettcher reports that Prima movements he has examined are generally 15-jewel, while the Extra Prima and Ultra Prima examples he has examined have 18 jewels. Antiquorum’s description is an exception to that pattern; its catalogue does not explain the mismatch. Christie's describes a 15-jewel Prima, and Bonhams calls another 15-jewel movement Ultra Prima. The lot descriptions give no shared caliber number or reference-wide grade. [https://catalog.antiquorum.swiss/en/lots/rolex-lot-15-258 Antiquorum]; [https://www.christies.com/lot/lot-811717 Christie's]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1073/lpi Bonhams archive]; [https://vintagewatchstraps.com/blogprima.php David Boettcher, movement-grade survey]

A scanned Oyster case-and-crown table lists ref. [[Reference:2416|2416]] at 10½ lignes in its “calibre size” column. TimeAnagram gives the same figure in a dealer movement field. A Hodinkee photograph of case 32342 shows a manual movement stamped “Rolex 15 rubies”; Bonhams also describes a 2416 movement as a patented Superbalance. The 10½ figure is movement size, and the numbered caliber remains unconfirmed. [https://www.vrfm.io/Scans/OYSTER-CROWNS-GUIDE.pdf Oyster case-and-crown table, ref. 2416 row]; [https://timeanagram.com/en/products/57171 TimeAnagram, ref. 2416 item 57171]; [https://www.hodinkee.com/articles/bring-a-loupe-march-14-2025 Hodinkee, case 32342]; [https://www.bonhams.com/auction/25954/lot/93/ Bonhams, case 37425]

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 For [[Reference:1073|ref. 1073]], Antiquorum names a 10½-ligne Extra Prima movement with 15 jewels. David Boettcher reports that Prima movements he has examined are generally 15-jewel, while the Extra Prima and Ultra Prima examples he has examined have 18 jewels. Antiquorum’s description is an exception to that pattern; its catalogue does not explain the mismatch. Christie's describes a 15-jewel Prima, and Bonhams calls another 15-jewel movement Ultra Prima. The lot descriptions give no shared caliber number or reference-wide grade. [https://catalog.antiquorum.swiss/en/lots/rolex-lot-15-258 Antiquorum]; [https://www.christies.com/lot/lot-811717 Christie's]; [https://www.collectorsquare.com/en/watches/rolex/oyster/ref-rolex-1073/lpi Bonhams archive]; [https://vintagewatchstraps.com/blogprima.php David Boettcher, movement-grade survey]
+A scanned Oyster case-and-crown table lists ref. [[Reference:2416|2416]] at 10½ lignes in its “calibre size” column. TimeAnagram gives the same figure in a dealer movement field. A Hodinkee photograph of case 32342 shows a manual movement stamped “Rolex 15 rubies”; Bonhams also describes a 2416 movement as a patented Superbalance. The 10½ figure is movement size, and the numbered caliber remains unconfirmed. [https://www.vrfm.io/Scans/OYSTER-CROWNS-GUIDE.pdf Oyster case-and-crown table, ref. 2416 row]; [https://timeanagram.com/en/products/57171 TimeAnagram, ref. 2416 item 57171]; [https://www.hodinkee.com/articles/bring-a-loupe-march-14-2025 Hodinkee, case 32342]; [https://www.bonhams.com/auction/25954/lot/93/ Bonhams, case 37425]
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