OK guys - I'm finally (maybe) beginning to wake up.
First, please tell me that AMA once really did mandate that your number had to be on the outside of the plane and it was supposed to be 1.5" tall, minimum.
Second, please tell me that AMA once really did mandate that the AMA ID sticker had to be on the inside of the plane ALSO.
I've been building and flying with those "memories of the rule" FOREVER (at least, since 1972). Virtually every one of my planes is set-up that way, and I've got 3 packs (10 each) of AMA stickers still sealed for my next builds, whatever/whenever they may be.