Not sure you can do it off a part number. If you find a bunch of letters like UOUMOA, this is a date code. It is decoded 0 1 2 3 4 5 6 7 8 9 N U M E R A L K O D 0 = N 1 = U and so on. NKNDOA = 070985 = Sep 7 1985 Muzz
i found this on e-bay