1948 Polish "service suspended" mail to Palestine: 8-4-1948 uprated airmail stationary (VI-1937 ed.) from WARSAW to TEL AVIV, franked 25Zl in place of obliterated pre-war pre-printed frank & tied by local machine cancel; as under-franked for airmail, marked by bilingual Polish/French "Insufficient fee for air transport" & sent by surface mail, here via UK: but as of 7 APR, UK suspended surface mail to Palestine, so marked by British "No Service | Return to Sender" instructional marking handstamp K-Type-IV. The cover would have been marked by the "Air Mail Service Only" instructional marking, but the cover reached the UK after the 25 April airmail suspension; returned to sender. Opened gently at back (possibly mailed unsealed).
Product Tags: Israeli, United Kingdomian,British, Polish, Mandatory Palestinian, Philately - Postal Covers, 1948 Israel: Service Suspended (by non-belligerents) and Postal History from Israel, United Kingdom, Poland, Palestine Mandate, and from 1947-49 Israel War of Independence, 1948 Mandate Termination & Israeli Interim period, 20th Century, 1940s, 1945-1949 Postwar era, Cold War which are Philately - Surface Mail (contemporary), Philately - Air Mail, Philately - significant cachets & postal markings, Philately - Suspended Service mail, Philately - Significant Route, Object Related Specifically to a Personality or Key Event,