The later models, probably by mid 70s, had different decals. I have not got the updated Caution label, but I do have the one for the flaps. On those models they put the stickers on the flaps and on the frame under the flaps, so 4 stickers, as opposed to just two on top of the flaps on the older models. It's not hard to see the way safety issues became more of a concern as time went by. Extra safety guards were put in place and additional warning labels.
Sizes of older model decals are approximately 5 cm X 4.3 cm (for the two caution labels) and 6.4 cm X 12.5 cm (for the two flap labels).
Size of later model decal (here attached) is approx. 15 cm X 3 cm.
