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https://deramateurphotograph.de/2019/10/09/189-c-friedrich-muenchen-doppelanastigmat-coronar-f4-5-75mm-seehaus-am-aileswasensee/
#189 C. Friedrich M√ľnchen Doppelanastigmat CORONAR f4.5 75mm - Seehaus am Aileswasensee