PO12 output jack broken, where to buy replacement part?

Hello! The title says it all, I need to buy new output jack for my po12… Does anyone know what would be the best place to buy one? I have found regular stereo jacks which fit but the original po12 has more pins, something to do with switching the internal speaker I think…

This one looks quite close, if you are able to try it please get back to us with your results. It says it is switched so it should do the trick