Hi - thanks v. much for the link and illustrations, and yes, this is the Glen Thistlewood Anne mentioned. David Doty's site is also of much interest to those who collect this material, and there is an overlap in information with the two sites. Like most of us who go around peering at glass for years, I've seen some of the more common patterns, but usually stay away from buying as it's a bit specialized and of course the States have to some extent overdone the re-use of many of the moulds. I'd not seen Windmill before, or at least couldn't remember if I had, plus as I say I was very impressed with the massiveness of the relief moulding. This example looks to be devoid of any backstamp or markings whatsoever, so no help there. Who currently owns or has possession of this mould I've no idea, but it's possible it's still be used, or even new moulds made - on this one the high relief of the windmill and surrounding bushes etc. is without any marigold - whether it's been worn away or for some reason escaped the salts we may not know. This marigold colourway is seen most commonly in charity shops - lots at times - so must assume it has been made in quantity in recent years. thanks again.