I have been reading all the recent GP discussions with great interest, especially Joe's discussion on the cut off serial number plates on the early tractors. It brought back memories of a 76 inch GP I restored for a collector near London around 1990, it was serial number 300425 and the plate was as Joe described, I replaced it with one of the US reproduced M-H plates available at that time and never thought anymore about it until reading this, so found the remains of the old plate and here it is, thanks Joe great theory and information.
There was no sign of any grey or green paint on this tractor at all, plenty of red underneath the oil and grease, it had even run down the back of the serial number plate.
Malcolm.