Reference:1680: Difference between revisions

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The production end date is not settled. Monochrome gives 1979. The Field Manual gives about 1981. The gap may reflect whether the count ends at the last serial band or the last retail delivery.
The production end date is not settled. Monochrome gives 1979. The Field Manual gives about 1981. The gap may reflect whether the count ends at the last serial band or the last retail delivery.


Rolex also made a gold version (1680/8) and a small COMEX-branded allocation. Both are discussed under special branches below.
Rolex also made a gold version (1680/8) and a small COMEX-branded allocation, both treated as separate branches.


<span id="movement-notes"></span>
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=== Lume patina ===
=== Lume patina ===


Tritium lume on Red Sub dials and hands ages over time as the radioactive material decays and the organic binder oxidizes. This patina is one of the most discussed and most misunderstood aspects of Red Sub collecting. Lerman devised a practical 0–6 scale:
Tritium lume on Red Sub dials and hands ages over time as the radioactive material decays and the organic binder oxidizes. Patina drives a large share of Red Sub pricing and a similar share of misreads. Lerman devised a practical 0–6 scale:


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