Sporting Club Home football shirt 1976 - 1977

1976 - 1977 Sporting Club home football shirt. Match worn shirt. According to the source, this shirt could also be sometime from 77/78 to 79/80, but all the photos I know from those seasons have a round collar. This one is from my personal collection, shown in full here: http://www.verdebranco.net/Sporting_Clube_de_Portugal/old-Sporting-Lisbon-shirts.html