1972 sounds reasonable, the year the Huret Luxe Super Touring RD was introduced. Your front crank set looks
identical to the crankset (
another pic) on
1970 Dawes Galaxy, except I changed the small crank from 42 to 36 in 1972, which necessitated dumping the original Simplex Prestige. I also have same brakes, levers, and chromed rims!