Olympiad mark badges
Tokyo Olympic badges were designed after considering those used during the XVII Olympiad in Rome and other Sports meetings. Badges were designed to be gold-plated and were unified into a single form. The badges for the officials, sports officials, sports teams, Organizing Committee, Press, invited guests etc., were divided into eight different types of "cloisonne colour" (a baked porcelain finish on metal) an 24 separate identifying classifications were added according  the category involved. 
 

These were further distinguished by distinctive ribbons in bright colours both plain and in combination.
Additional and appropriate badges markings were designed for His Majesty the Emperor, members of the Imperial Family, The Prime Minister, President of the IOC, member of the IOC, Secretary-General of NOC and of ISF, members of NOC and chiefs of mission.

The quantity of the badges to be cast was, in the first instance, estimated from the number of entries of the various sports events. Since there was sufficient time before the opening day of the Games, additional orders were place as revisions to the original estimate become necessary.

Commemorative medal

The Organizing Committee provided participation badges for the support staff, e.g. interpreters and for ground-helpers who were attached from the supporting Governmental Agencies such as the Self  Defense Force, the Police Force, the Fire Defense Board, and various universities and civil  organizations. These badges were somewhat smaller in size than the main Olympic badge, but conformed generally to the same design.

(Source document:   Official Report 1964,  Vol. 1, page 473)