While watching
The Men Who Made America series on the History Channel, I happened to notice that letters delivered to the two actors portraying J. P. Morgan and George Westinghouse circa 1895 had red two-cent A139 design stamps on them. Couldn't see them well enough to tell if they were coils, imperfs, or what, but they certainly had Washington's head in profile on them.

Looks like they were trying to get a classic stamp on the envelope, but missed by around thirteen years. I don't usually watch for such stuff, but this was pretty obvious. My wife just commented sarcastically "Who would know, or care, but a stamp collector!"