A fine and rare lithographed tin sign advertising “COLLIER WIATKA”, a pediatric, Electro-Galvanic collar () for treating various respiratory maladies (e.g., croup) and convulsions. Googling it reveals discussion and advertisements in various journals from 1871 through the 1880s, but it was still being sold at the very beginning of the 20th century. M.R. Barlerin was a pharmacist who had a shop in Lyon from the late 1870s through the 1890s. Very good condition, with bright colors, noting some very light and
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