A little older than you at 11 but I remember flying BEA Airtours to Alicante that summer. It was late June and my parents had come up from Santiago to see family and I had stayed in UK after school We went on holiday before returning to Chile and I too remember your Jigsaw. Interestingly due to flight time we travelled to London on overnight sleeper from Leeds, which was an experience in its self !! Flew back to Santiago on Iberia DC8 from Madrid, which had a very bright interior with deep Reds and Golds a step up from BEA Airtours , though on BEA we sat in seats around a table, two facing each other which was very different back then. I think there may have been 8 seats like that on board all the rest std.