Buckskinn
45 Cal.
Oh for heaven's sakes, brain fart... Yes, that is the English Fowler that I have in 20 ga and I have a York in 40 cal...Buckskin, that does not look anything like my York, as the lack of nosecap, fowler trigger guard, stock profile and roundface lock screams fowler to me. Unless that picture is not a pic of your York.
BTW, the York is one of the best Chambers sets. It is so light and quick handling for a swamped barreled rifle. Mine is a 50 cal and I absolutely love shooting it. Wish it had double set triggers like my Lancaster, but it is nice shootin' rifle.