Super exciting printing technology of 1861 destined for an obsolete future . Handsome and expensive to make this duotone steel engraved map is unusual and unique to A Keith Johnston of Edinburgh in the year 1861. Produced as a pinnacle of printing technology it was surpassed by Chromolithography as cheaper and faster among other things

Original hand water color as a secondary process , Land masses printed in Black, Water Masses printed in Blue

fine condition comes with 2 index sheet pages map folio 19.5 x 24.5 "