Jura Impressa E85 Rotary Switch

Hello,
with my Jura Impressa E85 unfortunately the Rotary Switsch (rotary selector switch) is defective.
selection to the right was still possible to some extent, but to the left was pure luck. I have already soldered out the Rotary Switsch, but nowhere can I find a substitute for it. It has unfortunately no imprint / designation.
It has 30 switch positions and a push button switch.
May be someone can help me here, where I can order such a rotary selector switch cheaply ?
I have attached a picture once.

Many greetings
Joe

Hello everyone
, I
ordered
the spare part from Amazon for
6,60€ and installed it today - works, I am satisfied! ENCODER, VERTICAL, 11MM, 30DET,15PPR EC11E15244G1 By ALPSManufacturer Part No : EC11E15244G1Manufacturer Name : ALPSBest Price Square Encoder, Vertical, 11MM, 30DET,15PPR EC11E15244G1 by ALPShttps://www.amazon.de/gp/product/B018COUT7Y/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8sc=1

I know this is old, but excellent post, thanks for your work.