Armstrong, of Wymondham, Norfolk, then went on to establish The Regal Experience, a sell-out Sunday afternoon film show that remarkably attracted many of the stars who appeared in the films, including June Whitfield and Virginia McKenna.
The events, helped by friends, were used to raise money for charity.
Ewbank’s of Send, Surrey, is holding The Michael Armstrong Cinema Collection, an auction to disperse the contents of his unique group of material, on April 30.
This includes his replica box office, cinema seats, plus posters, fixtures, fittings and equipment, as well as other memorabilia.
Meanwhile, also coming up at Ewbank's on April 9 is the 368-lot James Bond 007 auction.