Mk watch serial number
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Picture Courtesy of Simone – Tudor 7206 Something very important when analysing a GMT Master 1675 movement of this period is the presence on the movement plate of the word “D”. The 1575 is an automatic movement with slow date remittance, 19800 alt., 26 stones, a height of 6.30 mm and a diameter of 28.50 mm. CALIBER The movement of the Mk3 Matt Radial dial GMT is the classic 1575 GMT derived from the 1530 caliber, but with 1570 engraved on the bridge. Otherwise, in both cases described, the caseback could very likely be a later service replacement. Same with the presence of the word PATENTED which must always be present in all 1675 Mk3 Matt Radial dial. In any case I personally exclude the presence of the date in the Rolex Mk3 Matt Radial dial being it a previous caseback than the one produced from 1976. However, in rare cases older casebacks might also be found due to the fact that components that were actually stocks left behind have been used on this and on other Rolex references.
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However, the following pictures show that the tritium can take on a different shade of patina, either cold or very warm.ĬASEBACK Casebacks which can be found on Mk3 Matt Radial dials are essentially of two main types depending on the the serial number being lower or higher than 5.3 or 5.4 circa. Pic Courtesy Cristian Gensiulia The hands set is the the typical we can find on every Rolex Gmt Master produced by Rolex : GMT big arrow, Mercedes hands, lollipop centre seconds. However for those with a less trained eye it may be useful to observe some particularities with the following macro shots that can help you to distinguish as unquestionably original a radial dial. For us who have many years of experience in the watch industry it can be fairly easy to distinguish a fake from an original radial dial. Due to their desirability, the Radial dials are often counterfeited. Getting into more technical details, it can also be observed that the writings have more serifs if compared to the other 1675 classified marks, both on the upper part, the COSC writing and the T<25 designation. DIAL AND HANDS As already mentioned the main feature of the Mk3 Matt Radial dial is that the indexes are more centered and smaller than the standard GMT dials. Taking into consideration that from 4.2 circa service cases started to be produced we can well imagine how small is the number of production cases suitable for this dial. The Mk3 Matt Radial dial has been assembled on Gmt Masters 1675 exclusively from 1976 to 1978, this is to say circa between 4.2 and 5.5 million serial numbers. PRODUCTION BATCHES The production range where we can find this rare GMT configuration is fairly restricted. This brief essay sets out to deeply analyze this later matt radial configuration of the iconic reference 1675, that is to say the Mk3 Matt Radial dial. The main difference between the ones produced and in the 60s and those in the 70s is that the radial dials are no longer gilt, but with a matt base. CIRCA 1960.Īfter the very short production period in the early 60s of this dial, the radial configuration was taken up by Rolex in the second half of the 70s. The following pictures of some fabulous 1675 Gmt Masters we traded in the past show some of the dials appeared during the production of this reference. The dial, even to non-expert eyes, is the one that undergoes the most obvious changes : from the gilt chapter ring dials with OCC writing and then COSC to the ones with open minute track and finally to white graphics MATT dials. In this long period of time it has been continually subject to several slight restyling to some of its components (dial, movement, bracelet ecc) which testify Rolex’s continuous will to innovate its products both on an aesthetic and technical level in order to meet the latest customers needs and to technologically keep up with competitors.
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Reference 1675 remained in production for almost 20 years, until around 1979. The main differences between 65 are the aluminium bezel, the more performing and precise caliber and the renewed case design. Reference 1675 is the worthy successor of the legendary 6542, the previous GMT model in Rolex production. BRIEF HISTORY OF THE ROLEX GMT MASTER Rolex GMT Master reference 1675 production started around 1959. Obviously, suggestions or clarifications on the subject are welcome. In advance, I would like to point out that everything you will read here is exclusively the result of my own researches and experience. The purpose of this brief essay is to precisely illustrate the main characteristics of the Rolex GMT Master reference 1675 with Mk3 Matt Radial dial.