His collection was thought to contain tens of thousands of first-day covers, including stamps marking England's 1966 World Cup win, the Silver Jubilee of George V and the silver wedding of George VI.
With Barcelona thrashing Bayern Munich 4-0 in Wednesday's other match, a Chelsea v Barcelona semifinal looks assured unless Liverpool manage an unlikely win next week.
Instead it was Barrett v Baker, with the Irishman not allowing Baker to bask for long in a famous win over Williams, thanks to a fusillade of punches that propelled Barret into the final.