My 1963 GMT 1675 with Silver Dial?

[GeorgeK]

I am amazed at the patience of the OP.

It takes what, 1 or 2 Rolex watchmakers a few hours, let's say a day to dismantle the watch, and then maybe a month to contact the dial makers to examine whether this particular dial could have been made by them.
Then give it a month to gather the intel, and a good session with the experts to formulate an opinion.

Either they can or they can not do the analysis asked for. By now Rolex are deliberately holding the watch as hostage, for no apparent reason. Because they can?

I would not play that game, retrieve the watch and present it as is, along with the incapacity of a large watchmaker do deliver diligent work/expertise in reasonable timeframe.

Shame on them.