It's a great looking watch. I almost bought that same one, but bought the AP RO instead. If I could have found one to try one, who knows which I would have selected.
Close @Foo2rama, but a little earlier than Tritium, it's actually the Radium burn from the hands on the dial. I like to call this the idiots guide to original hands and dial or feeling the burn. Glycine is a great niche vintage watch if you enjoy a 24 GMT. And thank you!