I have a new old stock avon speedmaster 20"

I do not think its ever been mounted , Made in England. Anybody interested in it?

Museum Piece . Local Store has a 3.00 X 21 . Notta good idea on the road , unless for a No front Brake chopper or suchlike . All the new fangled tyre grip twice as long .

For a ' Original Fit ' Concorse restoration , hold the swine to ransome .

I think you will find that the introduction of Avon Speedmaster II front tires and Safety Mileage Rear tires was after Vincent went out of production end of 1955.

Avon Speedster and Supreme/New Supreme would be the tires for a period Vincent , but certainly this Speedmaster would have been the replacement in 1957 or 1958.