Many thanks Buck, another confirmation for me of a piece of "U" frame Massey history, back in the 1980's someone here in UK ordered a red Pacemaker decal set from the USA, when it arrived this decal was in the set and they did not know where to place it on the tractor, they contacted me and I could not answer their question, our conclusion at that time was the decal had been put in the set from a different make of tractor, well its only taken 30 years to get this confirmed as genuine, many thanks for that all the way from Australia, also a big plus to the use of this website, otherwise I may never of known the answer.
Now you have more questions which we can't answer today, hopefully the answers will come from somewhere in less time, but just goes to show if you wait long enough it comes to you.
Many thanks,
Malcolm.