LOT 179 OMEGA SEAMASTER 600 ‘PLOPROF’ FROM 1970
The ever greater depths at which professional divers worked inspired Omega’s engineers to conceive of a special watch to resist these crushing pressures. Indeed, 250 metres under the surface, the pressure a watch must endure is 25 Kg/cm, which corresponds to half a ton on the total surface of the watch! A watch of classical construction could not guarantee a total water-resistance under such extremes. More than four years of research were required to develop a solution to this problem and led to the creation of the Seamaster 600M/2000Ft Professional the so called “Ploprof” (the first syllables of plongeurs professionnels-professional divers). This rugged creation was equipped with the automatic calibre 1002.
In production models, the ultra-resistant and super-waterproof ploprof had a monocoque case, made of solid steel.
A system of over-compressed gaskets guaranteed that the only two possible ways for water to enter the watch remained totally water-resistant. Entirely sunk in the case middle, the screwed square crown is protected by a large locking nut. The crown was positioned at the 9 o’clock position for easier wrist movement and to prevent any undesired manipulation.
The mineral glass was submitted to anti-reflective and anti-abrasive treatments and was pressed to 120Kg. The bidirectional rotating notched bezel is protected by a locking system controlled by a special pusher that prevents accidental rotation.
As only the minute hand and the rotating bezel are of prime importance when diving at great depths, the minute hand is over-dimensioned and the dial is a splendid example of sobriety for uncluttered legibility.
condi t ion re ports pages 75-82 in f o@wa t c h e s of k n i g h t s br i d g e . com
45
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92