Here is a 100W GE BEST BUY economy lamp.
Voltage: 115-125V
Current: 0.82A
Date: 80's
Lamp life: 1000 hours
Filament: CC-8
Lamp shape: A19
Base: medium E26 aluminum
It seems that the Best Buy name preceded the Econo-Lite name, interesting! I have a 40W appliance lamp with a similar etch, so your Best Buy lamp is likely a pre-CGE.