The lady at Tricker's advised me thus: "The Production Office have advised me that you’ve purchased a Red Calf leather pair, not Cavalier. Therefore, this needs just the usual polish and care of regular leather shoes"
[The Cavalier are mostly boots and made of stuffed leather - my comment.]
I notice, though, that the red tan goes right the way through the leather. The insides are pretty much as red as the outers. .
Well, Munky, from what we're all told and seen, that's chrome tanned calf drum dyed.