This film belongs to the rare movies from Ray Nazarro which were not westerns, because the latest was, with Lesley Selander, a very prolific westerns provider. As far as I know, there were only two of them - non westerns - CHINA CORSAIR and CORSICAN BROTHERS. TOUGHER THEY COME was a timberjack adventure flick...Anyway this one is the first role for Ernest Borgnine and you have Jon Hall. So, only this is a guarantee of good adventure film. It is rare, not too long and exciting enough to grab your movie buff attention. I am sure TCM showed it once, but I am not sure. I don't know myself where from I got it, not TCM, maybe a private collector 16mm print....
Review of China Corsair
