Reference:2574: Difference between revisions

Line 54:

|-

| movement

| Cal. ~~9¾'''~~ 17 jewels, manual-wind, sweep seconds

| Cal. 9¾′′′ 17 jewels, manual-wind, sweep seconds

|-

| escapement

Line 138:

The outer-caseback reference engraving is the clearest authenticity anchor. It should be legible but not sharp; five-plus decades of normal wear will have softened it, though examples that spent most of their lives in drawers can retain crisper text. Extremely sharp or machine-perfect engraving is a warning sign, either a recent re-engraving on a worn caseback or a replacement caseback with modern work. Extremely soft or shallow engraving is compatible with heavy wear but should be cross-checked against the interior caseback for consistent period signatures.

The movement specification is the clearest cross-check when the engraving is ambiguous. A 2574 should carry a 9¾-ligne 17-jewel Aegler movement with Superbalance and Breguet overcoil, in either the center-seconds or sub-seconds variant. A ~~10½'''~~ caliber, a 15-jewel specification, or a dial layout that does not match the gear-train configuration of the movement variant present points either to a service replacement (possible on any 80-year-old watch) or to a misidentified reference. Because both layouts exist on documented 2574 examples, the dial layout alone cannot disqualify a candidate; the layout has to match what the movement underneath was built to drive.

The movement specification is the clearest cross-check when the engraving is ambiguous. A 2574 should carry a 9¾-ligne 17-jewel Aegler movement with Superbalance and Breguet overcoil, in either the center-seconds or sub-seconds variant. A 10½′′′ caliber, a 15-jewel specification, or a dial layout that does not match the gear-train configuration of the movement variant present points either to a service replacement (possible on any 80-year-old watch) or to a misidentified reference. Because both layouts exist on documented 2574 examples, the dial layout alone cannot disqualify a candidate; the layout has to match what the movement underneath was built to drive.

Unrestored original dials are the exception. Most surviving 2574 dials have been refinished at some point, and UK, Swiss, and North American refinishers active through the mid-twentieth century produced work hard to distinguish from original without side-by-side comparison. An original Royal or Observatory dial with even patina, matched hand aging, and period-correct printing carries a substantial premium within the reference's modest range, but verification is specialist territory.

@@ Line 54: / Line 54: @@
 |-
 | movement
-| Cal. 9¾''' 17 jewels, manual-wind, sweep seconds
+| Cal. 9¾′′′ 17 jewels, manual-wind, sweep seconds
 |-
 | escapement
@@ Line 138: / Line 138: @@
 The outer-caseback reference engraving is the clearest authenticity anchor. It should be legible but not sharp; five-plus decades of normal wear will have softened it, though examples that spent most of their lives in drawers can retain crisper text. Extremely sharp or machine-perfect engraving is a warning sign, either a recent re-engraving on a worn caseback or a replacement caseback with modern work. Extremely soft or shallow engraving is compatible with heavy wear but should be cross-checked against the interior caseback for consistent period signatures.
-The movement specification is the clearest cross-check when the engraving is ambiguous. A 2574 should carry a 9¾-ligne 17-jewel Aegler movement with Superbalance and Breguet overcoil, in either the center-seconds or sub-seconds variant. A 10½''' caliber, a 15-jewel specification, or a dial layout that does not match the gear-train configuration of the movement variant present points either to a service replacement (possible on any 80-year-old watch) or to a misidentified reference. Because both layouts exist on documented 2574 examples, the dial layout alone cannot disqualify a candidate; the layout has to match what the movement underneath was built to drive.
+The movement specification is the clearest cross-check when the engraving is ambiguous. A 2574 should carry a 9¾-ligne 17-jewel Aegler movement with Superbalance and Breguet overcoil, in either the center-seconds or sub-seconds variant. A 10½′′′ caliber, a 15-jewel specification, or a dial layout that does not match the gear-train configuration of the movement variant present points either to a service replacement (possible on any 80-year-old watch) or to a misidentified reference. Because both layouts exist on documented 2574 examples, the dial layout alone cannot disqualify a candidate; the layout has to match what the movement underneath was built to drive.
 Unrestored original dials are the exception. Most surviving 2574 dials have been refinished at some point, and UK, Swiss, and North American refinishers active through the mid-twentieth century produced work hard to distinguish from original without side-by-side comparison. An original Royal or Observatory dial with even patina, matched hand aging, and period-correct printing carries a substantial premium within the reference's modest range, but verification is specialist territory.