Further to my previous post about the styled 25 Lease Lend Tractors from the USA, each tractor which travels on the road in Great Britain has to be road registered with a document and registration number on  the tractor, so attached is the copy of the original document for the 25 showing it was first registered on 7th April 1941 and it's registration number for life being HNU 387.
The tractor serial number is 74748 and engine number 74277 and first registered to Derbyshire War Agricultural Executive Committee, followed by a few name changes before it eventually passed into private farmer ownership.

Of the three original Lease Lend styled 25 tractors I know of surviving in UK here are the serial numbers, 74386, 74745 and 74748, there are five more recent imports I know of all with the serial number starting with 7, plus one Australian recent import of a H V McKay Sunshine with number 74700,
 All these nine styled 25 tractors are all "A" Gears.

"B" Gears in Great Britain are all recent imports and serial numbers all start with 8 and so far I know of four tractors, mine featured above in this thread, on steel wheels is number 85398.

So as far as I know we have 13 styled 25's in preservation this side of the pond.  Please let me know if any one knows of any more.

Malcolm.