"Brass And Mahogany Solar Enlarger - Vintage Photograph Circa 1900"
Mahogany enlargement cone brass optical system Format 7 x 7 cm “The first enlargers had the structure of magic lanterns, a lens returned the enlarged image of the negative illuminated by solar light using an optical device. In the 20th century, electric lighting will replace solar light.” https://www.lavalisearlesienne.com/product-page/agrandisseur-solaire-laiton-et-acajou-photographie-vintage-circa-1900 
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