Business Appointment #1424 was available 1966-1967 and is EXTREMELY rare!
Pictured below, Ken is modeling the navy/white tweed overcoat with navy buttons and navy lining (shirt, red tie, pants and shoes NOT included).  The rest of the accessories included two vinyl black gloves and the black vinyl functional briefcase.  Also included was a black felt hat and a miniature copy of the Mattel Daily newspaper.  Missing is the fashion booklet and the original box.