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Curta Type 2a - Prototype P-004 - 12 X 7 X 16 digits - 1949 - with Curta Type 2 |
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Early Curta Type 2 and Curta Type 2a - Prototype P-004 | Curta type 2 - Comparison - Prototype P-004 / Serial model 500161
Frühe Curta Type 2 und Curta Type 2a - Prototyp P-004 | Curta type 2 - Vergleich - Prototyp P-004 / Serienmodell 500161
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