India 1948 Gandhi Airmail cover to Czechoslovakia

India 1948 Mahatma Gandhi – Souvenir booklet issued in Rio De Janeiro, Brazil to commemorate the 79th Birth Anniversary of Mahatma Gandhi during an Exposition held on 2 Oct 1948, with Indian 1948 Gandhi commemorative stamps (3 values), without folder. Similar with folder sold in Dec 2016 at Feldman for £1800 + comm