Landships II

Records at The National Archives show that following the First World War, the War Office received a request to sell three Mk IX supply tanks to a Mr A. Edm. Hansen of Berterbrogade 126, Copenhagen, Denmark for an expedition to Greenland.
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There was an issue about selling tanks to a non-allied power, but this was overcome it seems as they weren't armed.� But the file doesn't make clear if the sale actually proceeded.��

Does anyone know if it did?� And if so,�whether the Mk IXs reached Greenland and how they fared?��Finally, the holy grail: anyone got their serial numbers?