Besides the XX several other 501's were on display (1920's, 1937, 1950's). A careful enthusiast can study the differences in details among 501's from different periods. After all the event is to showcase the new Premium 501. The pair I tried on was a dark washed, whisker crunched, redline se...

The event will be held from 2-6PM at Barney's CO-OP in the Chelsea neighborhood of Manhattan and is meant to unveil the new Premium 501. You can expect to geek out on denim history, check out some archive pieces, and score some free t-shirts.