What is your experience with vintage and what are you looking for in the watch?
Are you looking for a vintage watch that matches parts to the particular year of production that it was made, i.e., a period correct watch? If so, we would need more information, such as the partial serial number (first couple of digits are enough), which is found at the 6 o'clock side of the case. The model number of the watch is at the 12 o'clock. The year production will let you know what dials were appropriate on those models/periods. GMTs, not including the gilt era (which this could easily be), could be about 8 different available versions.
For example, the pictures you loaded shows a sixties insert, which is a very nice and FAT font (known as mega fat font). A quick glance at the dial shows it to be near the end of the production (mid to late 70s) era for Rolex GMT 1675s.
I particularly think this watch is "very nice watch" and if the period correctness did not bother you, would make a great addition to any collection. I don't think it is over polished at all !
If you get additional information and want to learn more, post more details when you get them.
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