FA Olympus Teleconverter 1.4x-A lens Rare Zuiko

I'm auctioning this on E-bay. Auction ends on Feb.4, 2004:

This auxiliary teleconverter adds 50% to the focal length of the prime
lens, darkening it by just one F stop. The highly corrected optical
design minimizes image deterioration. Specially designed for use with
the 180mm, 250mm, 300mm, 350mm and 400mm Olympus Zuiko lenses. The
teleconverter also works well in combination with the Tamron 300mm
f/2.8 and 400mm f/4 lens. Lens tests show that it works even better
than the Tamron 1.4x teleconverter. This Zuiko teleconverter is
difficult to find, and is in excellent condition with clean glass. I
will give the wining bidder a five-day return privilege. Pay Pal,
cashiers check, or money orders are accepted. Shipping will be $10.
There is a low reserve. Good luck!