13MWZ is the style number of the very first Cowboy Cut” jean, designed more than 50 years ago with the help of celebrity cowboy tailor Rodeo Ben. The “MWZ” originally stood for “Men’s With Zipper” Read more..
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. to small general stores throughout the American West. 1871 Levi meet with tailor Jacob Davis, who invented a rivet to strengthen the corner of the pockets. Read more..
To collectors, Levi’s 501’s made before 1971, which have a capital E in the word Levi’s on the red pocket tab.
The first Jean with zip fly was the Lee 101 also named the cowboy Jean introduced in 1926 by Lee.