Dear Doug, The last time I saw Harry Quinn was in the late 1970's possibly 1979, I forget. Know it was after he had sold out to Frank Clements brother of Ernie Clements (Falcon Cycles). Harry Quinn sold the business to Frank early in 1977. Harry was old then would guess at him being well into his 60's. He had grey hair bald on top and always wore heavy dark glasses. Kind regards Frank.
Frank Cohen Hoxton UK