GMT-Master II 126713GRNR - what are my chances?

[JonnyFW]

I've (finally!) managed to get an AD to take my expression of interest for a GMT-Master II. Specifically the two-tone yellow gold version with grey-black bezel. It's with a WOS branch in the UK.

I've been collecting watches for about a decade, but this would be my first Rolex. (Currently own: Lange Saxonia, Bulgari Octo Finissimo, Grand Seiko LE, a couple of Tag Heuers and a few others.)

I inquired about a GMT about a year ago, but was told that they wouldn't put me on the list for that model, as it was too oversubscribed.

I made an appointment this time, and they agreed to see me. I hope I managed to convey to the sales rep that I'm a genuine collector and want to buy it to enjoy it, not flip it (it's to celebrate a particular life milestone). We did have a really nice long chat about watches generally, and he seemed generally interested in talking to me about my existing collection. Didn't feel like he was trying to get rid of me or anything.

I guess my question is, what are my chances? Should I be expecting to get one at all? Is it a case of, there should be one available but it might just take years? Or more a case of, it may never happen?