Baader Hyperion Clickstop Zoom 8-24mm in good/very good condition.
This has a thread-in base to which either 1.25 or 2 inch barrels can be attached. Both sizes are supplied.
Also comes with a soft pouch. A box is supplied for storage, but this is not a Baader storage box (I suspect in came in the pouch without a storage box.)
The only negative is that the top lens cover is not original and is slightly oversized.