Really rare, This is NOS (never used) Sansui volume potentiometer for Sansui amplifiers AU9900 / AU11000, an upgraded model to serve as a replacement for the built-in volume potentiometer.

Sansui recommended to replace the built-in volume potentiometer 250k x 2 (part.no# 10901200) with this one 100k x 2 (part no# 10902300) to get the softer angle of characteristic attenuation curve (please look at the last picture what I took from internet!)
That means that with this volume potentiometer (part no# 10902300), you will get better control of output signal than with volume potentiometer part.no# 10901200.

This is long storage part (more than 40 years old), so because of that, potentiometer has some discoloration on metal body (please look at pictures) … but that is normal for long storage items.

The price is for one piece!
Test before soldering, please! I do not accept any kind complaints on soldered component!!!