I did pick up a decent looking Bobcat II towards the end of 2020. Actually bought the coil for one and the seller offered me the rest of the detector for $10 more. Of course it was non-functioning. Was to be this years winter project. Spent about 3 months trouble shooting and replacing parts. Got it working and just kept on replacing component parts, since most were on hand. Basically now completely rebuilt with new modern parts.
Well, it works decent to about 6" on a coin or ring. About you can expect from the Bobcat, Lynx series VLF/TR disc machines. It is a non-motion machine. Stable, no drifting, steady threshold. Interesting the way it operates.
It's ready to go out and hit a sports field or schoolyard.
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I dig it with a Nokta/Makro product-Legend,
DeepTech Vista X and Blisstool V5 The Beast