The First Class LP from 1980 is a rare LP, probably because Sugarhill and Sylvia Robinson were starting to get into financial difficulties around this time and therefore production and distribution would have been affected, so the LP always fetches a relatively high price (often $300-400+ US) on the odd occasion it shows up on ebay or elsewhere .
It's also an excellent LP musically. However because of the varying productions and slightly dated arrangements (for 1980) (which is a complement by the way !!! ) throughout each of the tracks it has led me to conclude that the tracks were "in the can" so to speak from earlier sessions in previous years, possibly around the time of their excellent officially released first LP from 1976 on All Platinum which in itself is well worth getting ... and at a much cheaper price ...
None of the tracks on the 1980 LP were previously released , either as a 45 or on the first LP, so the 1980 LP is not a re-release at all .