The work of art was painted about 70 years before the first iPhone came out, having been finished in 1937 by Italian Umberto Romano.
It is meant to depict the arrival of the first settlers in New England, US, and hangs in the Commonwealth of Massachusetts State Office Building in Springfield.
Historians argue it is probably a mirror, or maybe a blade.
"The way the man holds it up, if indeed he's looking at his own face reflecting back at him, would certainly make sense," Anderson writes.
This would be a much better story if some expert could conform that it was, in fact, some kind of time-travelling iPhone but, alas, it is probably just a mirror.
A smartphone-shaped mirror.