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Jaap Schelvis: Altiflex II showing double-exposure prevention mechanism and window in hood serving as sports finder.
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Jaap Schelvis: Altiflex II (1938)
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Jaap Schelvis: Zeiss Ikon Ikoflex 1934
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Jaap Schelvis: JS--20210117-0011.jpg
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Jaap Schelvis: Ikoflex