Rare Eberhard & Co Hermetic 9K Dustproof

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This extremely rare cushion shape hermetic (double case) wristwatch by Eberhard & Co, housed in solid 9k rose gold, triple signed and in superb all original condition.  The case within a case design was an early attempt at completely dust-proofing a wristwatch by hiding the crown and its corresponding hole within a second outer protective layer.   The dust-proof design suited military uses extreamly well and these became known as "desert" watches because of this unique ability in the harshest of climates.  The outer, coin edge bezel and crystal screw counter-clockwise off the main case to reveal the second inner hinged case beneath.  This case then swings out to allow one access to the crown in order to set and wind the movement.  A truly ingenious concept beautifully executed here by the famed Swiss house of Eberhard & Co.   Most examples of this timepiece produced both by Eberhard and other high profile companies such as Rolex were round in shape, making this cushion shape example very rare indeed, especially in solid gold.

Style: Early Wristwatches, Military

Circa: 1920's

Case: Hermetic style double case with screw off coin edge bezel which when removed reveals the inner round hinged case within, each with a thick glass crystal.  All pieces are solid 9k rose gold.    Measures 31.5mm by 31.5mm excluding the hinged lugs, 37.5mm across diagonally.  Signed inside Eberhard & Co, 9C.  Comes on an old used leather trench watch style 12mm clip on strap.

Dial: Original factory printed white enamel dial in superb condition with no hairline cracks or chips.  Outer minute track, brown/orange radium numbers with small seconds at 6:00.  Signed Chronometre, Eberhard & Co, Swiss Made.  Original gothic style skeleton blue steel hands.

Movement:  High quality Swiss made manual wind movement signed Eberhard & Co, 15 Jewels, Swiss Made,  Bi-Metalic cut balance with blue steel hairspring.  Recently serviced buy our watchmaker and in excellent working condition.