Quote:
I guess the fact that the sets were issued at the same time
makes the case for them being "intentional varieties".
If that was true the catalog would be a lot smaller since they list so many souvenir sheets that duplicate issues.
I would believe the original cataloger did not know, someone mentioned it later, they added a footnote, and was not much of a priority to update. I had asked them why they assigned numbers for certain US issues and the response was that was how the editor did it at the time. The listing policy really depends on the editor.
Can someone post a scan of the SG listing? My SG catalog stops at 1970.
I actually do have the 1L issue. Steiner does not include a page for the additional varieties either.