WGB,
650c front wheels are sought after by TT and pursuit riders, you can still find tires either tubular or clinchers but they are expensive. They have a limited audience and hoops can still be purchased and built up.
Normally Quintana Roos were the rage in the late 80's-90's but people that do Tri's are more into carbon now.
I can't offer an evaluation other than to say prices are low especially since it is an earlier model...large size might be a negative as well for some as are the mismatched wheels.
Ben