13 rebuild voltage regulators for cars and trucks. Possibly Ford Chevy GMC Mercury Dodge Chrysler Plymouth Studebaker Hudson Packard rambler Nash Fairlane Impala imperial Lincoln who knows. I would guess in the 40s 50s 60s 70s maybe '80s all numbers are on the boxes don't ask me what they fit I have no idea they were bought from a shop that went out of business about 20 years ago you said they were all re- manufactured and are working condition. $150 reduced to $100.00 now 65.00 or best offer . Cash only if picked up if shipping is arranged payment will be by check mailed to me or PayPal.buyer pays shipping. T9507 STAMPED Nov 24 1964 I have 2 of this one second one says Jan 6 1965 one says it fits 1963 Buick Electra Delco Remy 12vn1119,12vn(3a) 512(507) may fit 59 Corvette.some are 6 volt. 1118828 IS DELCO REMY T8726P, positive ground 1118732 6 VOLT. I looked up this company many years ago and it showed what delco remy they replace or were before rebuilt. 6 volt , 7 volt 12 volt.Ford6v-p 4-h fac-10505-a2 7volt.