| 50th Anniversary Pocket Watch [message #17916] |
Tue, 27 December 2022 18:53  |
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kastner
Messages: 339
Registered: May 2013
Location: Pasadena CA
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Gruen Guildsman |
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Model name : 50th Anniversary
Type : Pocket watch
Period/date : 1924 (The movement was made in 1924, but it is unclear when this watch was cased and sold)
Gender : Men's
Case Maker : Gruen Cincinnati
Case Material : 18kt white gold
Case Serial : 1072311
Case Style no : none
Case Inscription (inside caseback): "Made Especially for Gilbert J Easton"
Caliber : See below
Movement Maker : Gruen
Movement Serial: 204
Movement details from Priceless Possessions of A Few by Fuller.
- 17-linge (approximately 10-size) open face, 23 jewels (21 extra quality ruby jewels, plus two faceted diamond cap jewels over escape wheel and balance wheel pivots on upper plates)
- 12kt gold plates (total 19 penny weight), individually engraved in floral relief pattern
- Steel cup in each counter-bored hole for plate screws
- Follow-up die used to slightly bevel around edge of spoke and inside rim of wheels
- Gold plated train wheels
- Chronometer style balance with solid gold screws
- Detachable staff which can be removed without disturbing relationship of balance hairspring, collet, and roller jewel
- Jewel pin fastened in balance arm with a bearing twice the length of the usual watch, making it doubly secure against coming loose
- Double steel roller
- Hand finished visible steel escapement with posing arms
- Patent micrometic regulator of continuous equal action
- Meantime adjusting gold screws
- True isochronal and Breguet hairspring
- Finest Swiss mainspring of lasting quality and great elasticity made by hand-rubbing so that the motive power is practically constant whether watch is fully wound or nearly run down
- Patented American pendant-set device of very few pieces
- Geneva style stop works and cut-away barrel bridges
- Eight adjustments to all positions, isochronism and temperature
- Fine Silver dial
- Patented inverted (Verithin) wheel train construction
- Extra finely finished in all details
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