This extremely rare miniature paperback book with 32 pages is titled Robin Hood . It was published by Raphael Tuck & Sons Ltd as one of the Tuck’s Better Little Book series in the early 1940's. The book measures 6.5cm x 9.4cm. These little books were published during World War II when there was a severe paper shortage. They were referred to as Air Raid Books or Blitz Books and were designed for children and adults to slip into their pockets for reading in the air-raid shelter. They were published by several different companies.
These books are scarce as they were ephemeral by nature.
If you remember these books or still own one, please get in touch at firstname.lastname@example.org