1967 Triumph GT6 Mark I Price: $21,930 18815 More , Triumph GT6's 1972 $7,500 Miles 1972 $21,600 93,000 Miles 1972 $24,000 800 Miles 1967 $20,405 4,000 Miles 1969 $23,220 Miles 1968 $4,800 40 Miles