The original name used on the prototype was "ET" as in "Elapsed Time." Pontiac used the name "The Judge" on all production versions, though.
SERIAL # IS 242379A128266 IS IT A JUDGE
If the car is in great shape and all numbers matching then yes it is as the judge is the king of the GTO's.
'69 Pontiac GTO Judge
in my opinion, NO.
If you are talking about a 1969 Pontiac GTO Judge, then a 1969 Pontiac Tempest/LeMans or even "regular" GTO can be modifed to look like a GTO Judge and for alot less money. Many people have done this and the cars are known as tribute or clone cars.
Condition and originality are key. There is no way we could give you a fair evaluation here.
The United States.
The Rear Axel for a 1969 Pontiac GTO is 60"
go to the library and get a chiltons repair manual for 69 pontiacs.
So much depends on condition , options and originality Normally it would be a difficult question to answer. If you need to ask here I would say you are not ready to make this purchase.
My books only break it down by Manual and TH400 auto. But, I don't think you could get a 3 on the tree in a GTO.
The model year change over was typically the first week in August at most of the GM plants in the late 1960's.