The x'd out pipes were those sold when Dunhill bought Charatan the first time during the '80s. Besides just a single X they completly x'd out the name Charatan on some.This is the best explination/history I've found on Charatan: https://www.alpascia.com/moments/en/detail/81/charatan-pipes
Having focused on three shapes ( Bulldog, Pot, and Apple) for the past 50 years I've not gone in for Freehands ( except for Charatans definition of a Freehand which has usually been a variation on a standard shape) so I don't own one. I haven't found ANY Artison pipes made by ANYONE that appeal...
I'd only use it on the inside of the bit to clean up the accumulated tars inside it.I tried it once on an acrylic bit on a Canadian I had and it dulled the finish and when dry left the surface feeling sort of grainy. Had to take it over to a friends to use his buffing equipment to get it shinny...