This is interesting, and old kit produced before we were even out of our prams... well some of us...
I remember these kits when we used to have local model shops, and I even bought one a few years ago to turn it into a Ford WW1 ambulance, opened the box and saw the small amount of parts and put the lid back on. I am sure it is somewhere in the attic.
The chassis here is painted with Tamiya TS 90 Brown and the patch is Tamiya X 9 Brown.
Clearly dissimilar...
Does anyone know which Tamiya pot paint matches the spray...? I need it for some small touch-ups...