This is a hilarious thing: a battery tester that requires a battery for operation. How many will they have sold? No idea... I never ran into an Ibanez branded version, just this Maxon branded unit. But you surely know that they were all Maxon made. It's list price in Japan was equivalent to ten 9V blocks.
09/27/2020: ToneHome is looking for an Ibanez CS-505 narrow box first issue with flying finger side graphics. Any lead is highly appreciated. Other than that we're looking for an Ibanez AD3000 Professional Analog Delay & Multi Flanger. Please submit your offers or leads here: e-mail