Snap! I was about to post an inquiry about a piece with the same signature, as shown in the images below. It is 22cm (8.5") high. We found it in a 'collectables' store at Mt Tamborine in Queensland, Australia, although I doubt it has an Australian origin.
This item is heavy walled, with what looks like embedded tiles (maybe best called tesserae, given there are not enough of them to be mille anything?). The base is unusual, with a large untreated pontil scar inside a formed base, which has been ground flat.
Our best guess is the signature has two parts. One part looks like a signature proper with initials CH, where an extended lower part of the C also forms the crossbar of the H. (Somewhat in the manner of Colin Heaney, for those who know Australian glass, although I don't intend to suggest a connection there.) The signature proper is superimposed on a word that looks like "Corio", but I must caution this is all guesswork.
Trevor