Alden guitars were produced by CMI, Chicago.
Some of the pickups used in their guitars are shown below:
Hershey Bar pickup with dimpled top panel, riveted to pickguard as in Alden Stratotone guitar.
1960s Alden Stratotone H-45 Guitar
Plain Hershey Bar pickup, woodscrew-fixed, with timber base, in Alden guitar (photo copyright TerriLee).