Therein lies the problem... he has a rusty tipper body (not sure about the hoist) and a different F60S which was not a tipper. He had an ARN from the F60S, 57006 which was also marked "AIF L". I happened to have photographed that page from the AWM 126 series of ledgers and it was listed as a "truck, KTN", and disposed of back to FMC.
So if he has the steel body it won't be the first type, and I think the 4th type was on a Chevrolet chassis.
