This is the 624.001 of the Sinalunga-Arezzo-Stia line.
Also this image is taken in may 1987, and this one in in the new livery.
(cfr with 624012)
This emu was built around 1924 for the Milano Varese line, electrified at
650V DC, then converted in 1931 to 3kV DC. In the eighties have gone to the
LFI.
Further images of these old rolling stock at
http://freedom.dicea.unifi.it/~leo/toscana/e624.htm.
Picture by leonardo Boselli