U/V Reaction to the Jubilee Blue green issue

[MIKE]

Question regarding the Jubilee Blue Green issue - I have a range of the Hendon described Black U/V reaction shades but also a small selection of those that under U/V shine bright whist normal are a dull beiges colour. Has anyone a suggestion - I have researched chemiluminescence and luminescence but cannot find a definitive answer - appreciate all suggestions.

[Wilding Mad]

Hi Mike,
Over the last few years I have been studying the various papers found to have been used to produce British stamps during the Elizabethan period but was not aware of Victorian stamp papers concerning with what you have described, is there any chance of exhibiting these anomalies in the form of attachments in order for myself and other collectors to see ?
It does help rather than just text !
Thanks, WM.

[PhilW]

The QV Jubilee 1/2d green was issued in three inks. First a "lead green" 17 April 1900, a reformulated "zinc green" August 1900 to replace the toxic lead & then a new "organic pigment" Nov. 1900.
SG Vol. 1, 16th reports these "can be distinguished under long wave ultraviolet light" (p. 263). I have a block from SG reported as fluoresces black and non-organic. I have not been able to find any more info on the UV fluorescing characteristics of these 3 inks and unfortunately don't have such a lamp but would be very interested in any news on this subject. I have plenty of 1/2d stamps to study one day!

[MIKE]

Hi - I have attached the narrative which came with the study, I have as yet not had the time to check each stamp as listed and I think without UV enhancement the individual items would prove unsatisfactory - hope it helps Mike