From the 2 marking I got the following descriptions;
"05305" this is the casting marking. 72-80 OEM Mopar Dodge D Series Pickup Truck Alternator 3755791-4 05305 48V 100A
"7509" this is a label on the housing. Powermaster Retro Alternators 7509; Alternator, External Regulator, 95 Amp, Natural, Dodge, Plymouth, 225/318/360, Each