MATCHLESS (1967) 
Patrick O'Neal is a secret agent Perry 'Matchless' Liston
aka MISSION TS / MISSION TOP SECRET / SIN REVIVAL  
NTSC playable on any standard US/Canada DVD machine
ATTENTION !!!! European & Australian PAL machine or PAL Blu-ray won't play this disc.
an Italian film in English language
runningtime :   104 min. (uncut / uncensored version)  
aspect :    widescreen 
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director: Alberto Lattuada
starring: Patrick O'Neal · Ira Furstenberg · Donald Pleasence · Nicoletta Machiavelli · Henry Silva

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While incarcerated in a Chinese prison, secret agent Matchless befriends a dying old man who - to repay kindness - gives him a ring. But this is no ordinary ring. It actually has the power to make the person wearing it invisible for a short period of time, once every 10 hours.