I wasn't aware of any BOL changers that had an optional recording head. Perhaps he has an extra arm with a standard crystal cartridge, as most BOL changers were converted to after everyone heard how awful these sounded.
edit: It looks like it DID have the recording unit, but it is now missing. Check out the pictures at the bottom of this ARF post:
http://antiqueradios.com/forums/view...62245c43fec974
So the recording arm is missing, along with that red/green switch assembly.
I've wanted a BOL changer for a while, but not the consoles that go with them. At Kutztown, I again saw the same dealer who has been bringing the same BOL changer for years now. It is very barn fresh, and evidently a little overpriced.