I agree,and it doesn't explain why i don't find the red/white marbles with a "pinched pontil"in Germany.
All the ones i own are found here in Holland and in England,they have all kind of cut off's,some have a smooth surface,others have a short straight cut off ,or a long straight cut off,or a spidery cut off,i have a few with a "pin pontil".like the point of a pencil.