SINGERIE - "The lesson of solflège". c.1864. Original etching and drypoint engraved by Zacharie NOTERMAN (Belgium 1820 1890). Signed in point under the subject on the left, in the tablet. Nice proof with the letter, on Aqua-fortists laid paper, bearing the dry stamp of the publisher Cadart & Luquet (Paris). Printed by Delâtre, rue St Jacques in Paris. All margins. Good condition. 27 x 21,5 cm the subject. 56 x 37 cm the sheet. Condition A (edge of the margins slightly insolated).