X50 service in Ashton-Under-Lyne?

[Mayneway]

RE: X50 service in Ashton-Under-Lyne?

(01/12/2015 18:29)joe_alker Wrote:  Recently I've noticed that a couple of bus stop flags on Wellington Road in Ashton-Under-Lyne have the route number X50 on, but as far as I'm aware the only X50 service in Manchester is the Piccadilly - Trafford Centre service. Can anyone shine any light on this, as to who operates it, when it operates and where it goes?

Which stops exactly Joe?
I'm guessing perhaps it's been put up in error instead of '350' or it's some kind of expires limited stop service following along the lines of the 350.