Thanks for posting one, Rob! Great to see these cards. I wouldn't mind picking one up if someone wants to sell or drops me a line. That's not why I posted this but thought I'd throw it out there.
I agree that it seems they were only in the dime loaf and not the nickel loaf. That could certainly account for some of the rarity. Todd, I'd love to see that "circular" as well. People save a little of everything so who knows, maybe some day. I grew up in DC, so I'll start asking my old friends to check their attics