Pity it's unmarked as that would help with the dating. You don't mention Eric Reynolds book, so don't know if you are using this as a reference source. The book, unfortuntely, doesn't say if this amber was produced in uranium, just says that ...'the popular colours were amber and a plain butterfuly blue' (with iridescent finish)'. Having said all that, it does look 'right' for your suggestion - the book doesn't carry a picture of this shape, and although Reynolds is a little vague on the date for this particular product, something like mid 1920to about 1932 seems o.k. A very good find by the way, and I might suggest a rare piece. :mrgreen: