OK, I have found some SOTN stamps from my collection to post.
Scott 65 with a Philadelphia CDS
Scott 65 with a Star in Box (S/E ST-S 19, New York)
Scott 65 with UNION Star (S/E ST-C 14, West Hampton, MA)
Scott 65 with "Seeing Eye" on cover from Woodstock, CT (Unlisted)
147, "Bullseye" or "Target"
One of my favorites, not technically SOTN on stamp, but pair!
How about an Airmail?
Don't know anything about this GB, but like it! Says "AXMINSTER M.O. & S.B."