Item from around 1950. Mouth Diameter: Approximately 3.7cm Frill Diameter: Approximately 6.0cm Body Diameter: Approximately 7.0cm Height: Approximately 6.0cm Purchased over 20 years ago! The shop owner told me at the time of purchase that the white parts were uranium-treated, but I suspect it might be opalescent. I apologize for not being able to confirm this. Uranium glass will fluoresce yellow-green under ultraviolet light (black light)... Confirmed by testing. ※~See image ④ for black light~ ※~Reaction on the bottom! There is also a reaction on the frill at the top, but I couldn't capture it well in the image~ Thank you for looking.