I know that R30b does not exist, so this had to have been trimmed, but that had to have been the absolute tallest R30c ever made. I can only assume that it was a miseperfed bottom margin single (you can see part of the next stamp above) or the planets somehow aligned and it was misperfed away from this row in both directions.

Regardless of being a fake, I still think it’s a neat-looking item.