The undercarriage design looks like that of a B100, the cab also being a typical International type with the single main pane of glass extending down the centre of the cab front, with two smaller ones for the sides.
No pictures yet but I have every intention of returning to the small holding where I saw it for some snaps! I do believe its the first confirmed IH crawler that I've ever seen so its well worth finding out who the owner is.
Best regards
Gavin