Sigurd Ringström
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Sigurd (Sigge) Ringström (Trelleborg 1908 – 16 August 1992)[1] was a philatelist who signed the Roll of Distinguished Philatelists in 1977 at Blackpool.[1] In 1982, with H.E. Tester, he was awarded the Crawford Medal by the Royal Philatelic Society London for parts I and II of The private ship letter stamps of the world.[2][3]

Selected publications
- The private ship letter stamps of the world. (With Henry E. Tester)