"When the game was 2-2, my colleague Fawzi took the ball from the centre and dribbled past all the Hungarian players to score a third goal.
"But the referee cancelled the goal as an offside!"
68 years have not blunted Mansour's memory of Hungary's fourth goal.
He insists the referee did Egypt a great injustice by allowing it.
"The Hungarians fourth goal came from a serious foul against me.
"I caught the ball from a cross but their striker hit me with his knees in my chest.
"His elbow broke my nose and he even pushed me behind the goal-line.
"Instead of penalising the Hungarians for a foul the Italian referee whistled for a goal amid the howling of 15,000 angry fans.
"All the Italian newspapers criticized their referee the next day and admitted he gave the Hungarians their ticket to the next round.
After 1934, it took 56 years for Egypt to make a return to the World Cup.
Mansour was disappointed with their performance at Italia '90, where they were eliminated in the first round.
Egypt's coach at the World Cup was Scotsman James McRea.
After the tournament, Mansour moved to his manager's homeland to begin a diploma in physical education at Jordan Hill Training College.
Between 1937-39, Mansour played for the
country's oldest football club, Queen's Park.