Mum is still chasing the jersey worn by Gary Sprake v Celtic in 1970 Euro Cup semi-final and put out a shout for it on here last year to no avail with piccie & YouTube vid of the Italy v Wales WC qualifier game when Italy's keeper Enrico Albertosi gave it to him.Albertosi played for Cagliari and the club was appealing for former player jerseys for their new club museum to exhibit.
Two Leeds United goalkeepers wore international jerseys for first team games during the 1970s. Gary Sprake set the trend by wearing the Italy shirt for the club's European Cup semi-final against Celtic back in 1970 while David Harvey wore a red Scotland international jersey during a league match against Leicester City in 1978.

Anything in the book about it ?