ping pong patina
·it seems harder and harder these days to tell whether a piece is relumed or not.....
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To relume a Tritium dial to it's original specifications you would have to replace "Tritium" with "Tritium" and as far as I know Tritium in most counties is now a restricted and controlled substance.
Respect the original character and property of all artefacts, especially those of historic, rarity or quality value, and advise the customer accordingly. If your customer requests work that, in your opinion, will unduly jeopardise this character, refuse the work politely but firmly and explain to your customer your reasons for doing so.
In many fields of restoration, materials are specified as using original if possible, or as close as possible if original is not available. Luminova, colored to reflect where the watch would likely be based on its age, should certainly be okay. The much bigger issue issue, I believe, is the quality of the application, not whether the molecular structure of the materials are the same as years back.

In principle I agree. However, I believe that the watches under consideration in this thread are certainly not of historic, rarity or quality value: they are industrial artefacts produced in thousands of units. This would not be the case for some cloisonne dials, whose hand painted enamels have to be preserved, but the dials we are talking about are simply printed ones!
Maurice
I really appreciate this thread. A conversation on the respectful level like the one between Maurice and Rob is seldomly seen on fora. It's great for simple watch lovers like me to have experienced watchmakers sharing their view here. Conversations like this help to widen one's own opinion on such topics.