An archive of 75 photographs taken in Singapore during the mid to late 1800s is to auction at Sotheby's London on April 30.
The rare lot carries an estimate of £40,000-60,000 ($59,213-88,820).
G Lambert & Co, a photographic company founded in Dresden that set up shop in Singapore during the mid 1870s, captured the images.
Sotheby's comments: "Work from the 1870s and early 1880s by Lambert & Co. is scarce... what they produced in retrospect remains the single most important existing pictorial record of Southeast Asia in the late 19th and early 20th centuries."
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