Gillers Antiques Ltd has dated this piece to the 19th Century.

Details:
Publisher: H.S. Nichols, Ltd., London, 1897
Edition: Library Edition, privately printed for the Kama Shastra Society
Volumes: Full set of 12 large octavo volumes (approx. 27 × 18 × 3 cm each, total weight ~12 kg)

Binding: Contemporary half leather (morocco) with gilt titles and arabesque motifs to spines and boards, cloth sides, marbled endpapers, top edges gilt, uncut fore- and bottom edges
Text: Red and black printed title pages, decorative Arabic title to each cover, all volumes collated and complete

Condition: Very Good. Strong and tight bindings, gilt still bright, very minor shelf wear, occasional light foxing to prelims, plates fresh and clean, no missing or loose pages, no repairs. No ex-library marks, inscriptions or stamps.

Provenance: From a private collection.
Dimensions: Each volume approx. 26.5 × 16.5 × 3 cm, weight per volume ca. 1 kg.
Language: English, with introductory notes by Leonard C. Smithers.
Importance:
Considered the most authoritative and collectible English translation of Arabian Nights; this edition is distinguished by its luxurious binding and the presence of all Letchford illustrations (often incomplete or missing in other sets).

Not to be confused with cheaper reprints or incomplete editions: this is the full Kama Shastra Society private press version, highly sought after and rare on the market.
Comparable sets offered by reputable rare book dealers (Harrington Books, Buddenbrooks, etc.) are priced at £2,500–£3,000 and higher; single volumes sometimes appear at auction, but complete illustrated sets in this condition are exceptionally scarce.

Recent Market References:
Harrington Books (London): £2,500 (VG, not as bright as this set)
Buddenbrooks (US): $3,500–$4,200 (depending on binding and completeness)
Abebooks/Biblio: listings from £2,500 to £3,200 for comparable sets

Auction records: most complete sets sell for €2,800–€3,500 depending on condition and illustration count
Summary:
This is a rare opportunity to acquire a true bibliophile’s treasure – the landmark 12-volume 1897 Kama Shastra Society “Library Edition” of Burton’s Arabian Nights, with all 71 Letchford plates, in original morocco and cloth bindings and in remarkable condition.

Please study the accompanying photographs carefully as they form an integral part of this description. If you have any questions, we will be happy to answer them. The item will be shipped with full tracking and insurance. It is important to note that shipping costs include labour, packaging and postage.
Gillers Antiques Ltd has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Gillers Antiques Ltd Profile Page