Assault on a Queen
The last time I saw this was in the late 70's on a local TV station in Cincinnati. It was the first movie I recorded on 2nd generation Panasonic VHS recorder. I can't say I've ever seen it since.
I also can imagine why this hasn't been released on DVD. With star power like Frank Sinatra and Verna Lisi, and a soundtrack by Duke Ellington, who could go wrong?