1969 McLaren Racing radiator blueprint.
This is an original factory copy of the master technical drawing of a McLaren radiator. The original technical drawing had been dated September 29, 1969 and this example has been stamped “shop copy” to the rear. The blueprint is quite large measuring over 3 feet long (29×40″) and is in fine condition but with the usual yellowing to fold lines. (M8B, M9A?)