Quote:
I'd be interested to know the purpose of this number.
I believe that the franking numbers were a way for Western Union to know who was using the stamps. The number was assigned to a specific company.
The franking numbers beginning with the letter "A" are, in my experience, the least commonly seen. The early stamps with "E" are also scarce.
However, I don't know of anyone that "values" any of the letters any more or less than another (other than myself, I guess).
The stamps were usually issued in booklets with panes of 4, 6, 8, or larger stamps.
The early Western Union horizontal pairs, imperf. vertically come from either leftover, unfinished larger panes of 16, as shown below, or from truly misperforated panes.
Shown below are some scans of the various franking numbers and their varieties.
Jim




