Denver's Frame!

A while back I acquired a 66 sporty basket. I've been trying to figure out who made the frame that came with it. I was hanging with my bro Chris Laurin this weekend and he showed me an old Denver's add that was in a 1975 issue of Custom Chopper. There it was..... 255 dollars. The frame is very different in sportster terms...... it's wide like a big twin. I think I'll make a rigid front end and put it together as a Denver's Bike would have been built back in the day.

Any one know what it is worth? hopefully more than 255 bucks! virtually untouched except for the seat spring posts that some one added on.