If Roy is able to tell us the maker he'll be a genius

Prismatic cutting is always attractive - I had a bottle with step cutting like this and often ran my fingers of the edges, just to feel the sharpness - sharpness like nothing else I've known. You haven't said as much so assume this one lacks any matching Nos., which is what I'd expect with this age. Shape wise, probably a cylinder with canted lower portions.
Roy, according to Wilkinson, his dating on the 24 point star is 1830 - 1840 ………………. McConnell suggests 1810 - 1820 for this pattern of the diamonds and step cutting, and says that prisms were the defining cut of the second period of Regency cutting - it might be cautious to treat as Waterford as sharp diamonds and prismatic cutting was not uncommon during the Early C19.
Very nice bottle - well done - shame about the damage - probably impossible to buy a bottle of this age without some damage to the high spots.