Patricia made a clever discovery in an old book on aLtare glass. The bottle is featured as a "traveller's bottle named "Of San Rocco" and allegedly in production at Altare in the 1860s. (still trying to decypher the detaails here). Rocco (Roche, Rock, Roc, Rok) was a popular saint - but no amount of googling brings up the bottle named after him. But at least - we now know where it was made, what for and when. I'm inclined to call that a triumph!