Hi there!
I've been looking at the same watch. While I have seen other vintage Speedmasters with very
yellow lume markers, the lume on the one up for auction is very even, and the exact same color as the lume on the hour and chrono spear hand.
Typically you see some degradation (white spots) on the lume at the inside of the hour markers (closest to the center of the dial).
It could be original, but it might also be a re-lume.
Curious to hear the OF experts opinion on this!
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