1)
I use the classifications of packaging styles as defined by the Airfix Collectors Club, which are explained in detail in the highly recommended website Collecting Airfix Kits .
The packaging styles Type 1 and Type 2 are not relevant here.
Type 3 header cards were introduced in the Autumn of 1963 and lasted into the 1970s.
Type 4 was the last plastic bag design before the blister packs were introduced in 1973.
Type 3 boxart was used from 1963 to 1973.
Type 4 boxart is characterised by the new round logo and kit name being in a corner box panel - 1973-197?
The Type 5 boxart featured a full-top artwork - available up to 1977
The Type 6 boxart featured the short-lived Airfix oval logo. Otherwise it was similar to the previous Type 5. The Type 6 box remained in production until the early 1980s.