I just picked up a couple Rook rifles the other day.
The H&H is also a "Ross" model I believe. I think the Royals had an ejector which this one does not.
It is still in its original chambering of .295 Semi Smooth Bore with a really nice bore. 28" octagon barrel
The Wilkes I just grabbed on gunsinternational.
It has had a poor restock but the metal is in great shape - the engraving is superb for a rook rifle. This one is an ejector too and still .300 Rook, and has a 27" octagon barrel and cased.
Also, the bore cleaned up beautifully - even better than the H&H. Thankfully the forend was not altered. A great candidate for a proper restock.