Selling for £450 incl UK delivery. A new one costs £775. Perfect condition with original packaging.
Pictures below show instructions with all the specs, but basically it has two settings, 30db and 24db gain.
The mirror finish on the front panel makes it tricky to photograph.....
Note that the impedance values above are the cartridge's internal impedance, not the recommended loading for the cart.... so setting A works very well for the Benz Glider (for example).