I realised I had forgotten to look in Skelcher. His second book Vaseline Glass: Fascinating Fluorescent Beauty has a smaller version (p128). He says probably Webb Sunshine Amber, and that the pattern matches a marked piece in Big Book of Vaseline Glass (I'm not entirely convinced). He also says the density doesn't match, nor does the uranium content. I say the colour is way off. I think I would probably rule out Webb, despite his claim. I'm also not sure the quality is quite there.