1970s Lee 200Z and Copper King 99Z comparison
The fly on both pairs is also constructed in the exact same way.
Pic 1 left: Lee 200Z
Pic 1 right: Copper King 99Z
The topstitching on the edge of the fly looks from the outside as if it goes through all layers, just like on Levi's zipper flies, but actually it doesn't. As you can see in pic 2 (Lee), it goes only through 3 layers. There's another row of stitches a bit further inward on the inside of the fly, and it's not clear how many layers this goes through. So ... some time ago I took another pair of 1970s Lee jeans apart to find out (pics 3 & 4).
It turns out, to my surprise, that this row of stitches just goes through one single layer, and therefore doesn't seem to have any functional purpose! However, it's there on every zipper fly Lee jeans I've ever seen, and on the Copper King pair as well.
If anyone can enlighten me as to its purpose, I'd be very interested to find out!
#vintagejeans #vintagedenim #realvintage #1970s #lee #copperking #fly #zipperfly