fac 221 - the factory contract binder.
after the number 221 was used for a badge in january 1989, it was
allocated again in december 1989. only a few dozen of these binders
were made, designed by 8vo. they consists of two 12"x12" perspex
plates hold together by 4 metal bolts. The bolts positions are located
to hold A4 sheets in place and allow the number of pages varying from
contract to contract.