Vintage T-Shirt Forum & Community Authentication Appraisals

Hi, I got Nirvana Nevermind 1992 with Wild Oats Tag please help me to check
Pit to pit = 21.5” - 22”
Length = 30.5”
1. This shirt are Legit?
2. This shirt made since 1992 right ?

its look good to me, Nothing looks amiss with the screen print, the material, or the tags.

Thanks a lot brother.