c. 1725
closed: 55.4 x 43 x 5 cm (21 13/16 x 16 15/16 x 1 15/16 in.) open: 55.4 x 87.8 x 5 cm (21 13/16 x 34 9/16 x 1 15/16 in.)
Engraving on cream laid paper
18th centuryFrenchEtching, lift ground aquatint and roulette on off-white laid paper
18th centuryFrench