| Country of Origin | Bulgaria |
|---|
Check the listing for details. 1957 Pilot's Flight Aviator Computer Navigation Airplane Slide Rule KNP-57 E6B. Condition: Used, Made in Bulgaria. Listed at 74.25 USD. I'm not a special and don't know much about it. All completed made of plastic. Rare collectible piece. They are described the best way I can.
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