Only Online Auction

Geneva, Sep 22, 2021

LOT 66

Hebdomas S.A., Graizely & Co. and / or Schild & Co.
8-day going pocket watch movement, inverted calibre with visible balance, later case; “Hebdomas”; aluminium

CHF 200 - 400

EUR 200 - 400 / USD 250 - 450 / HKD 1,750 - 3,500

TO BE SOLD WITHOUT RESERVE

Sold: CHF 62

Aluminium, eight-day going, open-face, keyless-winding, round-shaped, pocket watch movement with visible balance, fitted in a square-shaped working case.

Eccentric egg-shell enamel dial with radial Roman numerals; gilded metal “Louis XV” hands.

Movement 18’’’, inverted calibre, extra-large going barrel on the back, straight-line lever escapement, monometallic balancewith poising screws and blued steel hairspring with terminal curve, polished steel index-regulator.

Barrel stamped with technical specifications and awards (Geneva, 1896; Paris, 1900; Milan, 1906, Brussels, 1910).


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Grading System
Grade: A

Good
Case: 3-27

Good

Custom-made
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-71-01

Good

ENAMEL AND VARIOUS TYPES OF DECORATION Hairlines

HANDS Original

Brand Hebdomas S.A., Graizely & Co. and / or Schild & Co, La Chaux-de-Fonds

Model “Hebdomas”

Year circa 1910-1915

Movement No. unnumbered

Case No. unnumbered

Material aluminium

Length 59.5 mm.

Caliber 18’’’, straight-line lever escapement

Width 59.5 mm.

Weight 145.2 gr. (approx.)

Signature movement

Accessories copies of the invention patents

Notes

Movement based on the Swiss invention patent No. 88, delivered on January 10, 1889, to Irénée Aubry, Saignelégier, for a “Nouvelle disposition du mécanisme des montres de toutes dimensions particulièrement applicable aux montres bijoux et aux montres marchant huit jours et plus” (New arrangement of the mechanism of watches of all sizes, particularly applicable to jewellery watches and watches running for eight days or more).

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Movement based on the Swiss invention patent No. 24 675, delivered on October 9, 1901, to Arthur Graizely, La Férrière, for a “Montre extra-plate à échappement visible” (Extra-thin watch with visible balance).

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Hebdomas

Very popular at the turn of the 19th century and at the beginning of the 20th century, “Hebdomas” watches were usually made in gun metal, silvered metal, gilded metal or silver; very few examples are known in gold. They were normally produced with 18’’’ movement.

A small pendant-watch of 28 mm. diameter, made in 18K gold, is know; see:
· Antiquorum, Geneva, auction, April 18, 1998, lot 473.

Around 1915, the production of wristwatches with 12’’’ or 14’’’ movements began.

Some early “Hebdomas” movements are fitted with the Paul Perret’s balances, Swiss invention patent No. 22, delivered on December 20, 1888.

CONDITIONS AND INFORMATION FOR BUYERS

The purchase price payable by a buyer will be the sum of the final bid price plus the buyer’s premium, together with any applicable sales or compensating use tax. In addition to the hammer price, the buyer’s premium is payable as follows: 25% of the hammer price on each lot.

Important notice – Special conditions Please look carefully at all the photos as they are an integral part of the description. Any defect not mentioned in the descriptions but visible on the photos will be considered as described and cannot lead to any claim. The dimensions are given as an indication and may slightly differ from the measures mentioned by the manufacturers especially for contemporary watches. The photos are not retouched. Colors may differ from reality. For timepieces, we guarantee neither the functioning nor the precision of the movement, nor the water-resistance of the case. In addition, please note that movements, parts of mechanisms or cases may be incomplete. The lots are sold “as is”, described to the best of our knowledge and cannot be returned. Once the online bid is placed by the bidder, it cannot be cancelled.