About this object
Postmark from Dog Swamp, black ink, circular, (G31 type), dated 16 June 1978.
Also attached: Helichrysum thomsonii 18c postage stamp(s).
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Western Australian Museum 2024, Postmark, Dog Swamp (G31 type), 1978, accessed 21 November 2024, <https://collections.museum.wa.gov.au/collection/hanekamp-postal-collection/object/618>.
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