Sheet 59se, Old Series 1". First edition 1848 issued in 1890. Mid Wales: Merioneth, Cardiganshire: Aberdovey. Hand coloured engravingSheet 59se, Old Series 1". First edition 1848 issued in 1890. Mid Wales: Merioneth, Cardiganshire: Aberdovey. Hand coloured engraving, flat, 46 x 61cm. Topography 1837, geology 1848, issued 1890 unrevised. Clear plate mark. Untrimmed, map plate slightly askew in sheet. Library annotation in southeast margin corner. Clean, bright and in very good to fine condition. New county names Gwynedd north of the river and Dyfed to the south.