What detector does this coil fit?

[TabWhisperer]

I somehow wound up with this coil and it has been sitting around for years. It surfaced the other day so I thought I would ID it and see if was worth anything. It's 4 inches in diameter and about 1 3/4 inches thick. The male connector has 5 pins. A little dirty but I don't think it's ever been used. I think it may fit older Fisher detectors.

 

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[ATpro5]

Fisher was my guess also. I used to have a similar coil for the f75.

 

[TabWhisperer]

I was thinking this was from an early Fisher 12xx series that used 5 pin wiring. I think they changed at some point and went to 4 pin wiring.