{
    "schema_version": "1.0",
    "source": "Universal Philatelic Auctions Catalogue",
    "record": {
        "catalogue": "UPA103",
        "auction_id": 103,
        "lot_number": 10185,
        "country_area": "Great Britain - KGV",
        "subheading": "",
        "date": "1929",
        "sg_reference": "437Wi NCom8a",
        "description": "1929 2½d. Postal Union Congress Watermark INVERTED. The deeper blue shade catalogued by SG - NCom8a (Shade 1: Blue). Superb unmounted mint never hinged full original gum example supplied by Stanley Gibbons for the sum of £3,500=. A delightful well-centred example (design clear of perforation) with deep colour. The 'London' market is ahead of SG's current £2,500= listing, being in the region of £3,250=. It is a few years since we last sold a UM NH Wmk Inverted PUC 2½d. when there were 4 or 5 bidders and a similar quality example realised circa £3,000. A seldom opportunity. As the accompanying Stanley Gibbons retail catalogue states … of this very difficult watermark (1v. + SG Retail card)",
        "classification": "UM",
        "size": "Medium",
        "plate": "31",
        "sg_catalogue_value_gbp": 2500,
        "upa_estimate_gbp": 2950,
        "image_url": "https://www.upastampauctions.co.uk/contents/en-uk/upa103/10185.jpg",
        "canonical_url": "https://catalogue.upastampauctions.co.uk/lot/103/10185/",
        "json_url": "https://catalogue.upastampauctions.co.uk/lot/103/10185.json",
        "current_catalogue": true,
        "last_updated": "2026-10-02T15:47:51+00:00",
        "transaction": {
            "label": "View / bid",
            "url": "https://www.upastampauctions.co.uk/contents/en-uk/UPA103-AllLots.html"
        }
    }
}