Does anyone know when the intermediate sized 1d and 1.5d were first introduced? The specialized catalogue just says 1934. The large and small sizes have the year, month and day indicated.

The late Bill Meredith of Northampton was working on this problem, using dated covers as a guide. Unfortunately, he died before he could publish any conclusions. I have a note in my "Wants" book that the 1.5d intermediate size was issued at the end of Nov 1934, but cannot remember where I got the original information from. I have no information on the 1d intermediate. Incidentally, the date for the 0.5d intermediate in the SG Specialised is wrong - it reads 17/11/1934 instead of 19/11/1934!
Harvey

Thanks for the information.