Levi's big E type III biker vest.
The early 1960's 557 XX model, with bigger neck label (this tag was made smaller on the later versions of Big E type III jackets), and even chambray lining under the pocket flap (also an early feature). Nice orange & lemon yellow stitching, and beautiful mid indigo shade.
On this jacket you can also see the yellow bar tack stitch underneath the pocket-flap. The color of the bartack was changed to be more in tone with the denim fabric on later versions. 
It also feautures the big E red tab, located on the left chest pocket. The Red Tab was introduced in 1936, with LEVI'S written with a capital E up until 1971 on both jeans, jackets and other garments. In 1971 they changed the text from "LEVI'S" to "Levi's".
 
The 557 XX denim jacket was first made in 1962, replacing the older 507 XX (type II) jacket with a new slimmer cut and modern design made to meet the 1960s fashion, and one can say that this is the jacket that really left the old work-wear style jacket behind and became an everyday casual jacket. As you probably can see there hasn't been much changes to this jacket ever since, and if you're walking in to a Levi's store today to pick up a denim jacket it will still be the type III on the racks.  A timeless classic that is also the most copied model by many other brands.
 
Tag size US 40 (men's M/L european, but please go by measurements)
Shoulders 18" - 46cm
Pit to pit 21" - 54cm
Lenght 22" - 56cm