Yamaha PortaSound VSS-100 Sound Output Operation Confirmed

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This product is a YAMAHA VSS-100.

I have confirmed its operation using batteries and an adapter that I have on hand.
I have confirmed sound output from the speaker and headphones through simple operation checks and sound tests. There were no noticeable issues with the functions or buttons.

The keyboard section is also in relatively clean condition overall.

Regarding the exterior, please judge by carefully comparing it with the photos, as this is my subjective opinion.

Thank you for reading.