Complete four volume set of E. Littré Dictionaire de la Lingue, first to be published by Hachette, Bd Saint-Germain, Paris  in 1877.  For context, Louis-Napoléon III ruled France and Emperess Elizabeth, affectionately known as "Sisi" reined over Austria. 
Leather bound bindings are in tact, and the 150 year old, perfectly tea stained pages turn easily.
Inquiries welcomed.  Merci