Plato Clock with Red Tiles

[Performa]

I've never seen anything like this one before. Listing is HERE.

[Performa]

A few of the seller's photos for posterity:

[Performa]

A thought occurred to me- are these by chance the "glowing" tiles they had treated with radium? I seem to recall Mackey having said somewhere that some of these had been manufactured that way, though I may be mistaken.

[flipoclock]

good thought, the numbers seem to be a bit 'radiant' (no pun intended), only two ways to find out... You ask the seller or you buy the clock

[RetroFlip]

Sometimes see them in blue as well, blue with gold or white digits. Maybe the red like this is a less common flap color.