Yamaha PSR-550 PORTATONE Electronic Keyboard Workstation / Arranger - $800 (Philadelphia)

Yamaha PSR-550 Electronic Keyboard Workstation / Arranger This is a Yamaha PSR-550 Electronic Keyboard.
the keyboard in use for just two or three minutes.
the surface of the potential of this instrument.
It sounds awesome! Markings: YAMAHA PORTATONE ELECTRONIC KEYBOARD SER.
NO 0111277 (see last photo) I noted one quirk.
I had to depress the power button twice on the initial start-up.
After that, it only took one push to power up and down.
The foot pedal is not included.
You can purchase a foot pedal online separately.
Cosmetically it looks pretty good but it may have abrasions/scratches.
Please consider the pictures to be the best description