1978 70s Levi's 505 66 Late Model, Button Back 8, Dark Indigo, Vintage

Vintage, made in 1978
Levi's
505-0217
Made in USA
42 Talon zipper
Top button back 8 (Image 7)
Black bar tacks
Double-stitched back pocket lining (Image 6)
Double-stitched coin pocket lining
Gold thread side seam (Image 9)
Equivalent to the 66-late model of the 501

Size: W27 L34
Flat measurements:
Waist: Approximately 34cm (approximately 35cm when stretched)
Total length: Approximately 93cm
Inseam: Approximately 70cm
Hem width: Approximately 18cm
Thigh width: Approximately 28cm
Please allow for some margin of error.
Hemmed with chain stitch, actual measurements are approximately W27.5 L27.5

In my opinion, about 90% of the color remains, a deep indigo.
Condition: There is slight abrasion near the hem (Image 12).
I feel there is some light fading around both knees, showing signs of wear.
Paper patch is missing (Image 4).

Considering it's over 45 years old, the fabric is still sturdy, and the inner paper tag is clearly readable, so I think it's in good condition.
This is from the button back 8 factory, which also produced Big E models, so good fading can be expected.

Please understand that this is a vintage, used item before purchasing.
If you have any questions, please ask in the comments.

Denim color: Deep indigo

Model number: 500 series
Model name: 505
Silhouette: Tapered
Features: Red tab, chain stitch

Search words
684
BIG E
66 early/late
Hachimal (80s)
Red ear
Original
LEVI'S
Levi's
501
505
70505
71205
557
558
Single stitch
Bush
Original
Made in USA
American made
Shinzone
Shinzone
Fumika Uchida

Denim color: Deep indigo