Great Britain Philatelic Society

With regard to the preparation of photogravure cylinders for the printing of postage stamps in the early 1930s, would somebody kindly tell me, with absolute certainty,

a) at what stage in the process was the control added?

b) was the cylinder chromium-plated before or after the proof of the sheet of stamps had passed inspection?

Thank you!

Robin (R)

Robin,
It would have been pretty stupid for the Harrison's engineers to add the chromium plating to the cylinder prior to its being passed as OK for printing, wouldn't you agree...? If any changes were necessary following inspection, the plating would have had to have been stripped from the area needing to be changed, changes made, then re-plated! Too much work.
Harvey