Snell Type A II Speakers


I have a pair of Snell Type A II speakers.  Does anyone have an idea of what they might be worth.  They appear to be in pristine condition,but have been stored indoors at a friends house for the past ten years. I no longer have the electronic crossover unit  they originally came with.I am considering moving to my home to test and then sell.  Will they work without the electronic crossover? Any suggestions?
martyge165