The snap - pictured below - shows our captain fantastic lifting the FA Cup in 1991 with Princess Diana leading the applause from the Royal Box at Wembley.
"All cliches aside, that's the schoolboy dream," reflected Gary, almost 14 years on. "As a boy I used to watch the build-up every year, starting at about ten o'clock in the morning with 'It's an Cup Final Knockout' or something like that and it was a whole day's viewing.
"We'd watch the game and as soon as the captain lifted the cup, we'd go out to the local park with a football to re-enact it all again.
"I remember thinking to myself when I was at the bottom of the steps at Wembley thinking back to how I used to watch it on television. I then got the cup, turned to our fans and the noise was amazing. It's a very special moment, the defining moment for me and the best memory of my career."
Gary's career at Spurs spanned 16 years, most of it as captain and he suffered more highs and lows than most - all as he battled against diabetes.
One famous low was his own goal to hand Coventry City the FA Cup in 1987. "It made it all the sweeter against Forest," he admitted.
"I had a lot of high points but with the way the game went, everything seemed to go against us in the first half with Paul's injury, Forest went 1-0 up with Stuart Pearce's free-kick, the penalty, the goal disallowed.
"Paul's injury meant a lot of adjustments but we rallied, kept working hard, kept playing the way we believed the game should be played and managed to turn it around.
"When the final whistle went and, as captain, I led the team up the stairs to pick up the trophy, it was a very proud moment."
Gary Mabbutt has one picture from his playing days on show at home - it captures the realisation of his schoolboy dream.