Maybe the current owner was mislead by the person he bought it from. Or, the current owner does not know any history of the car and is making assumptions (sometimes owners can easily talk themselves into believing their car is super special - lowest mileage known, some special one-off from the factory, perfectly original even down to the air in the tires, etc).........or, the current owner and/or seller is purposely trying to mislead buyers.
The good thing is if someone who visits this forum is interested in this car, they now know the correct history thanks to JFerriss.
It sure is a beautiful car. Wonder if it's just as nice in the engine compartment and underneath?