I've got an ST48 Stimer pickup I'd like to sell. It's only been used, literally, a handful of times. It's about 15 years old and works just fine. I've removed the clip, so it can be used on any type of soundhole configuration. Has the original cable that came with it. I'm willing to listen to offers or sell outside of ebay. It's in great condition...I just no longer have a need for it.
Stimer ST48: https://www.ebay.com/itm/174309417788
If you have any question, I'm always lurking around, so I'll reply pretty quickly.