The new Kens produced for 1966 came with a painted blush. Allan was discontinued this year, so (as far as I know) there were no blushing versions of him ever made.
KEN #0750 (blonde and brunette)
Having never found a 750 Ken from 1966-67 NRFB, I can only assume that he came in the same box, with the same wrist tag, as the previous year. There is certainly no evidence to suggest that he came in a different style box.
KEN #1020 (brunette)
KEN #1020 (blonde)
BOOKLETS & CATALOGUES
Bendable leg Allan must have been discontinued by 1966. A drawing of him appears in the Barbie booklet for 1966 (below left), but the code number is that of the regular version, and there is no mention that he has bendable legs. He doesn’t appear in any catalogues, not even the Mattel ’66 Preview. The regular Allan was discontinued during 1966 (see Mattel Toys 1966 catalogue below).
The Kens below vary from other 1020 Kens in as much as they have darker eyes and lighter lips. They are possibly from 1967, though could also belong to 1966. There are simply not enough contemporary sources to definitively show what Kens from 1967 looked like. The few catalogue references I have found are detailed below. Close-up photos of both can be seen in THE VINTAGE KEN® BOOK.
KEN #1020 (blonde and brunette)
BOOKLETS & CATALOGUES
It is not apparent from the 1967 catalogues whether Mattel produced new Kens, or whether they simply sold off old stock. There is certainly nothing to indicate that any dramatically different type of Ken was introduced for 1967. The regular #0750 Ken features in all three Mattel Toys catalogues for 1967, and is presumably the Ken sold with the Braniff Pilot uniform in the 1967 Montgomery Ward Christmas catalogue. The only other US catalogues from 1967-1968 to feature Ken, that I’ve discovered so far, are the Western Auto Spring Summer order catalogues, and they only show outfits, not Ken dolls (see section 1967 The Braniff Pilot Uniform).
In Europe, both regular and bendable leg Kens were available as late as Spring 1969. The European Mattel/Barbie booklets only show pictures of bendable leg Ken, but the French booklet for 1968-9 also mentions the #0750 Ken in the written description. In Europe he was still shown with a blush, but the few US references seem to show him without.
The German Mattel catalogue for 1969 features a vintage bendable leg Ken both in the photograph and the written description (it mentions his shorts, jacket and sandals), so he must presumably have still been available to order during 1969. The same catalogue however shows New Good-Lookin’ Ken modelling the outfits (see section 1969 The Outfits).
The German toy catalogue below still shows vintage Kens – though as models only – as late as 1970.