Cool, thanks Phil316! I have this link that dates these jerseys...it seems it might be 100% polyester superfil or a durene type jersey....they converted to polyester in 1980-81 according to the website, but the 'superfil' tagging suggest it's 100% polyester in 1979-80. Do you think it's a 'durene' type jersey? That would also date it from 1979 for sure as they were transitioning to different materials for a better playing experience... http://capsjerseys.com/tagging.html