Results for 'crackle glass' are prolific - mainly for water jugs and vases etc., but I couldn't see something of this shape, although may have missed it. A plain 'from the mould' base, with four mould seams, (am assuming this is mould blown) - but the four internal projections are very unusual. Possibly a vase, but might be an ice bucket perhaps. Height is about 5.3/8" - 137mm, and some base wear although difficult to see in this clear glass, and with a ground/bevelled top rim. Sorry pictures are a little inadequate, they don't really do justice to the massively indented surface. I have looked at past references from Ivo and Craig (some of Alfredo's images), but hope someone can assist, and thanks for looking.