I own one of the first models, it doesn't say Superadio anywhere on the
radio.I bought it new at a Service Merchandise store.Model number is,
7-2880B
It does have external screws connections on the back of the radio for
external antenna.FM GND and AM, there is a battery compartment too.On
the dial it says LONG RANGE HIGH SELECTIVITY.On the speaker grill (it
has one speaker) it says GENERAL ELECTRIC with the GE logo in the middle
of GENERAL ELECTRIC.The radio still works real good.The radio was made
in HONG KONG.A few years after I bought the radio the ON/OFF push button
on top of the radio quit working.I replaced it with a toggle switch.
cuhulin