What it's for
The old pieces collectors hunt: hidden-rivet Levi's, the Type I and Type II jackets, early Lee Storm Riders and the first Wranglers. Reissues of all of them exist, so read the dating panel on each page and ask for photos of every tag, button and patch before you pay a collector's price.
5 models we cover.
Start here

Levi's · Straight leg
501XXHidden back-pocket rivets about 1937–1966
$2,300–$5,150 typical ask
24 on eBay
Levi's · Jackets and coats
506XXabout 1905–1953
$5,350–$14,275 typical ask
16 on eBay
Levi's · Jackets and coats
507XX1953 to about 1962
$3,150–$7,500 typical ask
15 on eBay

Lee · Jackets and coats
101-LJ1949–present (Storm Rider label from 1953)
$140–$280 typical ask
143 on eBay
Wrangler · Straight leg
11MWZ1947 to about 1952, then renamed 13MWZ
$1,150–$2,550 typical ask
25 on eBay