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A Krzysztof K. Słowiński Collection

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Item no. P925a (postcard)

Item no. P925a (postcard).jpg Item no. AP27 (ad postcard)MiniaturesItem no. P925b (postcard)Item no. AP27 (ad postcard)MiniaturesItem no. P925b (postcard)Item no. AP27 (ad postcard)MiniaturesItem no. P925b (postcard)Item no. AP27 (ad postcard)MiniaturesItem no. P925b (postcard)

Item no. P925a (postcard)

Type: cover

Country: USA

Date of use: 1919

Business stationery (unused postcard, front of) used as order form by SPENCER LENS Company in Buffalo (New York, USA). Charles A. Spencer (1813 - 1881), called “father of American microscopy”, opened his first optical business at age of 25, as a manufacturer of microscopes and telescopes. After his death, the business was carried on by his son Herbert who later introduced also production of photographic lenses.

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