One of the Ives 3251s recently returned to running order is this Series 3 version:
A strong runner, it's pretty battered in its current form, to the extent it's missing a door on one side and the bell is long gone. While I'm long past a time where I wanted things to be pristine, I'm seriously thinking of giving this a refurb, i.e. a strip and repaint after a bit of straightening and dent removal. It never occurred to me that the cab doors on these things were a separate piece of metal soldered into place.
PD