jimmythebuyer
·A 1970 "service dial" doesn't necessarily mean the dial was made in 1970 - It could have sat in the parts cupboard until required.
IIRC around this time Tiffany & Co. were printing their own name to the dials, not the factories.
(At least apparently for other manufacturers, no idea about UG since there are so few that have surfaced).
Again though, there is no way a service dial and that chapter ring in 1970 would leave the factory with radium in it. Radium was illegal by then. It would be tritium used in the luminous material.