Kasuga KC-2602
This Kasuga KC-2602 is a version of the iconic Bolt Box, nicknamed because of the lightning bolts on the speakers. The first photo shows one with the lightning bolts intact, and the other photos show one that someone cut the bolts out for some reason. There were many different versions of this radio, with many different names. I'm not sure who was the original manufacturer, or which model was the first. But here is a list of them. Some have a different combination of features, like burglar alarms, slots for shoulder straps, LED VU meters, graphic equalizer instead of bass and treble, separate/combined L/R volume knobs, side inputs, single or dual antennas, etc.
Aiko ATPR-9500 (IBBN 7-04975)
Elite II-7070 (IBBN 7-13723)
International-unkn6 (IBBN 7-04414)
Kasuga KC-2200 (IBBN 7-07515)
KTO 1090 (IBBN 7-07525)
KTO 7070 (IBBN 7-11565)
With round speaker coverings:
Applause brand
Bon-sonic H5000 IBBN 7-15222 (bolts on blue grills)
Bon-sonic H5500 IBBN 7-08167(bolts on silver or blue grills)
Browni KC-2602 IBBN 7-15689 (bolts on blue grills)
Eversonic SH-550 IBBN 7-00283(bolts on blue grills)
General SRC-9000GA (bolts on black grills)
General Sound GS-808S (bolts on black grills)
International KC-2400 IBBN 7-04576 (no bolts)
Kasuga KC-2602 IBBN 7-15689 (bolts on blue grills)
Le baron KC-2602 IBBN 7-09768 (bolts on blue grills)
Nippon FS-2400 IBBN 7-14140 (no bolts)
Nippon FS-2420 IBBN 7-15070 (bolts on blue grills)
Nippon FS-2440 IBBN 7-05214 (bolts on blue grills)
Stereo-Sonic KC-2400 IBBN 7-10659 (no bolts)
Tatung unkn5 IBBN 7-05346 (bolts on black or blue grills)
Kasuga KC2602 ghettoblaster stereo cassette player