Thailand. (Officially Sealed Censor Labels). 1942. Registered envelope addressed to Phra Nakhon bearing SG 293, 10s red (pair) tied by Bangkok No 4 date stamp '20th Jan 42' with provisional 'R/ Bangkok' registration label with circular '6' or '9' censor cachet in violet and 'Post & Telegraph of Thailand/ Officially Sealed' labels (three) tied by circular '6' or '9' censor hand-stamp on face and reverse.
Very nice item of registered mail with Officially sealed labels used for censorship.