A vintage 1973 DeArmond/Rowe acoustic soundhole guitar pickup. It's the kind that Bob Dylan used and other folk guitarists from the day. It is the model 210. The pickup reads 9.40 K Ohms. The pot code on the bottom is 1377324. This dates it to 1973.
The pickup was repaired where the ground wire comes out of the coil. You can see I attached the ground wire to the outer screw with a small piece of red wire. See pic #9. It's a solid repair, but please don't mess with it. Works great now. The coil is completely original otherwise. The lead wire was reattached and has about six feet of length with a male 1/4 inch jack, so you can plug it right into your amp. South polarity magnets.
Ready for 50 more years of use. This pickup has almost no scratching on the plate. The wheel works fine, there's no scratchiness in the sound. I tested it through an amp by tapping with a screwdriver and it works great. It should give you a great sound for your acoustic guitar. Buyer pays $7.00 shipping. International shipping will be about $15-25. -Fred.