I don't think it'll be seized. I'm pretty sure the battery is so stuffed that even trying to jump it won't work. I've had this before.
Dro the battery from the III in it and I reclon it'll fire up after a few coughs and splutters. It might be worth truning it over on the battery for a min or two with king lead off just to build up some oil pressure befor eletting it run properly.
nick