Sheet 28, Old Series 1". Covering Lundy Island. c. 1850s. Only date is OS base 1820.
Sheet 28, Old Series 1". Covering Lundy Island. c. 1850s. Only date is OS base 1820. Hand-coloured engraving, 64.5 x 87.5cm (25.25 x 38.5”), dissected and mounted on linen folding between marbled soft card covers. The emptiest geological map, showing 98% sea area. The short geological boundary is not engraved and no legend is shown. There is no issue stamp. In very good condition. Never many copies as of such limited unvarying area.
About the England & Wales One Inch Old Series
The Geological Survey of England and Wales used the Old Series of the Ordnance Survey topographic map at a scale of one inch to the mile as its basemap, initially. These engraved basemaps were published and revised between 1805 and 1885; the sheet sizes varied and the layout and numbering system were eccentric. The Old Series geological maps were hand-coloured and without geological sections, which were published separately. The GS of E&W published the Old Series from 1850 to 1900, when it switched to the colour printing and the New Series one inch maps. However, old stock of the Old Series continued to be issued, hand-coloured, until the 1930s.