[Leica] circa 1970s Leitz projector question

[jamiecarol at earthlink.net (Jamie Gordon)]

Hi - I own a Leitz Pradolux RT 300 slide projector. I'm pretty sure  
it dates back to the late 70s. I used it for a few years in the 80s,  
but it has pretty much been sitting in a closet for the last 20 years  
or so and I've gone digital at this point. It was a great machine in  
its day. Features: remote w/forward-reverse-focus; 2 settings of lamp  
brightness; separate switches for fan and lamp so you can run the fan  
after you switch the lamp off to cool it; one rear leg is adjustable  
for leveling; the height adjusting leg in front operates on a one- 
touch button; 3-prong, retracting 9" + power cord; lens is labeled  
"Leitz Wetzlar Colorplan CF 2.5/90 mm." Unfortunately, the most handy  
feature, the auto-focus, seems to have quit since I last used it (I  
tried it out today). My question to you folks is this: is this  
projector worth anything to anyone, or should I  just give it to  
Goodwill? I appreciate any opinions... thanks.