Ebenezer Bacon and Co. London Essay Sheet with eight designs

Ebenezer Bacon and Co. London Essay Sheet. Beautifully engraved sheet with eight designs die sunk and measuring 153 x 226mm half inscribed Prepared Charcoal and other half Fine Tooth Powder with Ebenezer Bacon and Co London Machinagraphists (Registered) imprint at bottom and manuscript plate no. at top. Very Fine an intriguing essay. The same essay sold in Siegal December 2019 Auction (lot 1005) for 950 US dollars hammer price (approx 850 pounds inc premium)