Riverboats SC 3091-3095B

Not me. I would have bet good money that there was an earlier self adhesive commemorative out there somewhere. But when I looked in Scott, the only commemorative-sized SA stamps I could find were the 25-cent & F-Rate flags ... which were, of course, definitives.

Frankly, I didn't know it either if it wasn't for the fact that I pulled this reference from the Postal Bulletin in 1996:



Anyway, it makes for a good "stamp trivia" question!

The Riverboats were the first commemorative to be issued in a regular pane of 20 with selvedge and separations between the stamps. But the Tennessee and Iowa statehood stamps preceded the Riverboats as self-adhesive commemorative stamps. Both were issued as water activated panes of 50 and self-adhesive panes of 20 in convertible booklet format. The Postal Bulletin appears to acknowledge that by calling the Riverboats the "first self-adhesive commemorative pane".