Harry,
I really do not care when the data plate was moved. It is known that the plate was was mounted in two different places during the production run of the tractor, but that did not alter any replaceable parts or function of the tractor. I am interested in when:
1)the front spindles with caps used on the early Originals were changed to the spindle with bolt and washer (S/N 10,333),
2)when the thin front axle on the Original was replaced by the thicker casting (unknown),
3)when the dash decal for the electric start Original replaced the one used on the recoil start Original (unknown, and the decals do not have the same information on them),
4)when the steering wheel on the 100 was changed from the acorn nut type used on the 70 to the plastic center cap type (unknown),
5)when the QL models changed from internal wet brakes to external brakes, and then back to internal wet brakes (known),
6)when the QL hydro's changed from the manual check/dump valves to the automatic valves (known)
etc., etc. If a part or function changed during a series run, then I am interested in when
it took place