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johnnyh4: Selfix 820 original (?) wind-on/shutter interlock (Step 0)
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johnnyh4: Updated interlock mechanism (Step 1)
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johnnyh4: Updated interlock on Selfix 820 Special (Step 2)
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johnnyh4: Fabricated, and Selfix 820 Special, interlock levers. (Step 3)
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johnnyh4: New pivot screw and hole (Step 4)
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johnnyh4: The assembled updated mechanism (Step 5)
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johnnyh4: The assembled camera -1
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johnnyh4: The assembled camera - 2
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johnnyh4: Pawls Selfix 820 Special, Selfix 820(early)