Just curious if you might have considered asking Belkin to make a dial for it with the lume filled indices rather than sandwich? Not saying it 'needs' it but it would be even more special IMO. Having said that, front loaders can be a bit of a PITA to mess with.
Correct - the gen is not a sandwich dial. The 662 & 663 were designed as 'homages' to the 6152 variants that developed a brown hue to their originally black dials. This was caused by sun exposure and the effects of the radium.