That would be good,....Smiles. It would last two donkey's ages....
I have no idea what the CP means but I have a HB Blitz that uses a standard ring and the cylinder is hard chromed, the regular HB dykes ringed engines are not chrome.
I checked a couple of mine and I have one that is stamped CK so it may just be a quality stamp or some kind of lot code stamp.
http://en.wikipedia.org/wiki/Chrome_plating