Item Title:
Intaglio printing plate - 1879 tender for the 1d contract: Set of two backgrounds (D1(a) and D2(a) of machine engraving, each with outline of frame, prepared to demonstrate the effect of lighter backgrounds for intaglio stamps. Steel. Perkins Bacon. Great Britain. Stone: '4th January, 1879: 'Engraving 4 Preliminary dies (postage).' '