Malta. 1941. Envelope addressed to London bearing SG 220, 1 1/2d scarlet tied by Valletta double ring with 'Malta is Grateful To The Royal Navy and Royal Air Force For The Safe Arrival of This Letter' , framed triangular 'No 47/ Passed by Censor' cachet in violet with 'Opened by Examiner/ Malta/ 21' label. Attractive item.