Old borgelt b21, b24, and b25 set. Came out of my PIK, the vario worked but audio was intermittent. It's going in the scrap bin unless someone wants it, you might be able to get it working or pull parts to fix yours. You can have it for price of shipping.
I'll attempt to put some links to pics below, if you're interested email me, elijah at ad7zj dot net

https://photos.app.goo.gl/W54rAdSsnn8GkWp49

https://photos.app.goo.gl/7wkEATFGkZPsFd5w9

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)