Collection of Golf Open Championship postal covers from 1968 - 1978 (19) to incl 1968 - 4x Carnoustie 1968, Lytham colour postcard 1969 with Open Championship cancel mark, 5x St Andrews 1970 incl The 5th Day Play off , Royal Birkdale 1971, 4x Troon 1973, 2x Carnoustie 1975, Turnberry 1977 and St Andrews 1978