A jack is one of the easiest things to take out of a car.
You don't even need a tool to do it.
Therefore, it might be difficult for some of you to state, with certainty, that the jack is original to the car.
I'm sure John (49er) can make that statement, but before we start narrowing down the cut-off serial number, we should state how certain we are that it is original to the car.
2 other points:
There might not be a clean cut-off. There might have been mixed supply at a point in time where both were used depending on many variables, cost, speed of delivery, availability.
Also, how about the mating parts in the trunk floor. Did they stay the same as the jack was changed? If not, we should be comparing those because they are at least fastened down and a tool is required for removal.
Does anyone know if those mating parts are different for the two jack styles?
(By the way, mine is the late style in a 1970 VIN #012160, bought from original owner. But I really don't know if there was some reason that it got changed out prior to my purchase
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