Bar Tacks -
Vintage Levi's Jeans Guide
Bar tacks are a sewing
process that was used to reinforce the top corners of the rear pockets
of jeans. It involves sewing a large amount of thread to an
area for strength. It can also be used as an 'acid test' to
whether or not Levi's are vintage or not. If they contain bar
tacks at the corners, you can usually say that those Levi's are at
least 20 years old and may be vintage.

First style of bar tacking.
This is called an inner bar tack because it has to be bent
down to ]
see the stitching.

Peroid: 1967-June 1976
Pockets were made with both rivets and bar tacking.
Black
Dark Green

indigo blue/purple
Peroid: 1976-1983
No 'hidden' rivets,
bar tacking was in various colors.

Peroid: 1983-Present.
Bar tacking now in yellow and
contained on the
pocket fabric. Not as noticeable.