This is the classic DeArmond everyone wants for their parlor flattops, these days! It's rated at a whopping 11.3k ohms (hot!) and has giant, adjustable polepieces not unlike a DeArmond Dynasonic's massive poles, though in a different format. Everything is original, functional, and ready to pop into your guitar.
Due to the high output, this has a really aggressive tone that's very much unlike a lot of other pickups. It's also somewhat body-sensitive, too, which is part of what gives it that delicious, full-out tone that vintage-styled blues guys are after.
The massive thumbwheel is the volume control.