A bit of a mystery - a cylindrical pressed glass vase, the sides decorated in an imitation cut design, and the inside base bearing design registration number 410631 (which would have been registered between 22 May 1903 and 3 June 1903).
(Permission for the re-use of this image on the GMB granted by 7877cairns).
Not listed in Thompson, Slack only lists RD numbers up to 1900, and too early for the Blue Book. The number has been double-checked in case it was originally misread.
Does anyone have any more information regarding the precise registration details for RD 410631, please?