True vintage Jethro Tull concert T-shirt on the Road again 1979

Description

True vintage Jethro Tull concert T-shirt on the Road again 1979.
Good from condition , I cannot make out what the tag says but it probably fit like a modern day small.
Approximate measurements
Shoulder to shoulder 13.5”
Pit to pit 15.5”
Shoulder to bottom 23”