Vintage Bomber Jacket Brown Leather Lined Zip Front Western Trucker Size order Medium

Sturdy brown leather jacket.
Front breast pockets with snap flaps, front slit hand pockets on front, and one inner breast pocket.
The lining has a nice rusty brown color and a southwestern pattern.
It zips up the front and also has snaps at neck, at the cuffs and at the hem.
Bomber, trucker styling.
Although I have tried to research, I find little on this specific jacket.
I believe it is an 1980's, could be late '70's.
Style # on the tag is 518-1797, has a WPL #34605, and the vendor # is 43-0.
Very nice condition.

Actual measurements of the jacket, taken on the outside:
Chest, across at underarms - 48"
Shoulder seam to shoulder seam - 20"
Sleeve length, from sleeve inset to cuff - 25 1/2"
Around the hem - 40, stretches comfortably to 44" due to elastic band
Length, from shoulder to hem - 26"

Label - Levi's Authentic Wear
Made in Korea
Fabric - Shell, leather; Lining, cotton; Sleeves order, nylon; Filler, polyester resin treated
Size - tagged Medium