 Coronado-branded products were made by various companies that specialized in private label manufacturing such as Wells-Gardner, Belmont, Warwick, Detrola, Colonial, Arvin and Kingston Radio Corp. beginning in the 1930s.These companies also manufactured private label electronics for other retailers such as Sears (Silvertone), Western Auto (Truetone), and Montgomery Ward (Airline).It was not uncommon to see practically identical versions of Coronado-branded goods sold in competing retailers under the Silvertone, Truetone and Airline brand names.