When I said it's part of the dial, I meant that the ring is not available separately, and not designed to be removed from the dial. It's a separate part that is affixed to the dial...
Note that the dial I am showing was in a flooded watch, so there is discolouration on it from rust...
Hard to tell with the lighting in your first pics above, so usually the tritium on the hands of this era tends to have a slight green tint, rather than being bright white. That's what I thought I was seeing in those first photos, but the lume shot appears to show Luminova hands.
I guess how long the lume stays bright would be another indicator.
Cheers, Al
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