501 LOT number Levi’s jean. 1853 Levi Strauss arrives in San Francisco and opens a wholesale dry goods business, selling clothing, blankets, handkerchiefs etc.
Anti-Fit is one of the characterising features of the 501 Levi’s Jeans and been with the jeans since 1890.
Arcurate Denim Encyclopedia
Big E, to collectors, Levi’s 501’s made before 1971, which have a capital E in the word Levi’s on the red pocket tab.
Five Pocket Jean. The total numbers of pocket a classic jean have; the classic jeans have two back pockets plus two front pockets and a watch pocket inside the front right pocket.
Pre-shrunk means the denim has been penetrated to make sure that the garment will shrink less than 3% in washing. And that’s just a technical way of saying that washing your jeans should not affect the fit of the garment.
Raw denim (dry) contrary to washed denim, is a denim fabric not coated after being dyed during its production. Over time, denim will extensively fade, which is often considered desirable.
The red cast is the organic blue, which is also known as happy days, has a slightly reddish tint. It was used by Levi’s to make the Big E. The dying formula originally included some real corn syrup.