80s Super Rare Levi's 501 Pre-dyed Light Gray, Single Stitch Inseam

■ Brand: LEVI'S
■ Era: 1980s
■ Item: 1984 501 USA
■ Color: Light Gray
■ Size: W31 x L34 (See actual measurements below)

■ Condition:
Hemmed.
Some minor soiling.
Other signs of wear, but still wearable.

■ Actual Measurements (flat):
Waist: approx. 38.0cm
Thigh: approx. 29.5cm
Total Length: approx. 92.0cm
Inseam: approx. 66.0cm
Rise: approx. 35.0cm
Leg Opening: approx. 20.0cm

I've never seen these before.
It's a pre-dyed light gray, or perhaps white. You can see the difference when compared to the fabric on the inside.
*Images comparing it to white are also included.

The care tag has a single stitch on the inner thigh, and of course, the bar tacks are white.
The hem has been altered, but they would also look good rolled up.

Above all, aren't these quite rare?

Thank you for your consideration.