The blocks arrived yesterday, and it turns out the 10c is the inverted watermark variety!
It is not listed in Scott Catalogue, the normal stamp is #8. I believe it is listed in Gibbons as 7a or 7w or something like that - hopefully someone can confirm this?
I used PostmasterGS
"Watermark Extraction Technique" in this thread:
https://goscf.com/t/15246#15246 This stamp proved very difficult to scan, but I was able to see part of the watermark by scanning the reverse. You can see the
CA just above the woman's head.
Here is what the full watermark looks like:
Posted 11/15/2011 7:17 pm
