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desc_issuer: Liechtenstein desc_year: 1931 Related descs: issuer=Liechtenstein-1930-2fr issuer=Liechtenstein-1932 Not used by any overprinted stamps. Matches 2 types: Liechtenstein airmail 6/1/1931 1fr olblk issue=Zeppelin d=zeppelin over Naafkopf unwmk perf=11.5 Liechtenstein airmail 6/1/1931 2fr blblk issue=Zeppelin d=zeppelin over Valuna Valley unwmk perf=11.5 |