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У меня была пару часов с этим механизмом. Как и любой тонкий калибр, он требует своевременного обслуживания и, конечно, более чувствителен к смазке, чем ролекс.
В покупке бу часов не вижу ничего страшного, если за часами следили и не доводили их до обморочного состояния.
Вообще, по моему мнению, это один из самых замечательных автоматов со смещенным ротором. В инете много инфы по нему, это фредерик пиге. На его базе сделан вечник и не только.
Вот что говорит Бреге по поводу этого калибра:
"The 502 caliber originally is a Frédéric Piguet creation, but after the acquisition of Breguet by the Swatch Group, the caliber has been completely internalized at the manufacture as an exclusive Breguet calibre and improved to version 502.3.
The meliorations that the Breguet Research & Development Department obtained were made possible thanks to the use of the latest technologies and to the advances in research in new materials and alloys. The new Breguet standards for caliber 502 include an increase of its frequency from the original 2.5Hz (18’000 vibrations per hour) to 3Hz (21’600 vibrations per hour). In addition, it is now fitted with a “free-sprung” balance and with a balance-spring & pallet horns in silicon.
The result is an appreciable increase of the performance in terms of functioning and regulation of the watches equipped with this caliber, giving it a better regularity. As a matter of fact, taken account of the thinness of the base movement, one can qualify its chronometric performances of exceptional. The upgrade is also contributing to make the movement less subject to magnetization."
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