One of the knobs is broken off the filter slider, otherwise this item is in good working condition.
The support stand is missing.

Described by Olympus manual as:
"L-shaped fluorescence illuminator/IX2-RFAL,
Offering twice the brightness of the
preceding model, this L-Shaped illuminator
offers removable aperture and field stop
inserts with excellent access to lamphouse
centration mechanism for maximum system
flexibility."