yes, the boldness or how thick things are i would ignore first time arround
and the quality level of the time would also have a say
but i will start with helvetica first and see how close a match it is, does the year 1981-1982 have much say in it? what i find dificult is ruling out fonts based on what would have been availble
EDIT: what i mean with the above is, example, nimbus is said to be released in 1987 and since the board was put in production in late 1981 to start of 1982 it cant be nimbus