Thanks, et. The dealer had a brand new one that looked about the same but he said something to the effect that the new one had all Jungheinrich electronics whereas the 2007 model CAT did the electronics...which worries me some.

The unit seems to have AC drive at least on the mast as the mast up speed is regulated by hydraulic motor speed rather than proportional valve (i.e. it it whisper quiet at slow 'up' speed in contrast to proportional valve situation where mast up is loud whining motor at all speeds)

Serial no. is 2NR3742723. It is a 36 volt system, if that matters. Unit is not even for sale as it is out on long term rent but may come up for sale in December at which time I would be interested if it's not a potential repair nightmare.

I would offer that it was most likely (no sn so can not say for sure) completed at MCFA, in Houston, using a tractor unit made/designed by Rocla for MCFA, and the mast (and straddle outriggers) is most likely USA made from a design owned by either MCFA or Liftec. The motors and motor controllers would be made for and by MCFA as "proprietary units", slightly earlier trucks used a set of ZAPI controllers in 36 v models, you may have the zapi controllers.
Like every unit these days, you may eventually have some issues that will require someone trained by the manufacturer to 'work out'.
As someone who has worked as an electric tech for MCFA dealers over the years, one problem is always the "critical mass" of units sold in relation to finding someone who knows what they are looking at, and how fast the unit becomes obsolete. an example of that is NYK trucks in the USA. they were not a bad truck in relation to other trucks built at the same time, but almost no one knew what they were looking at, so finding a tech who knew the units and did not create basket cases was almost as rare as finding the high dollar parts available after MCFA started building units in the USA from USA sourced components.
all that said, I think [imho] these units are some of the very best out there, not because of the service levels available to support it, but because of the design that requires very little repair service (so far).