US #C86 Electronics Progress; MNH
$0.16United States of America – Scott No. C86 – MNH (2021 SCV $0.30) De Forest AudionsFaults or Other Considerations: None noted.Keywords: backbook; airmails; year1973; inventions SKU: USAC086-15
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US #C86 Electronics Progress; MNH
$0.16United States of America – Scott No. C86 – MNH (2021 SCV $0.30) De Forest AudionsFaults or Other Considerations: None noted.Keywords: backbook; airmails; year1973; inventions SKU: USAC086-16
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US #C86 Electronics Progress; MNH
$0.16United States of America – Scott No. C86 – MNH (2021 SCV $0.30) De Forest AudionsFaults or Other Considerations: None noted.Keywords: backbook; airmails; year1973; inventions SKU: USAC086-18
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US #C86 Electronics Progress; MNH
$0.16United States of America – Scott No. C86 – MNH (2021 SCV $0.30) De Forest AudionsFaults or Other Considerations: None noted.Keywords: backbook; airmails; year1973; inventions SKU: USAC086-19
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US #C86 Electronics Progress; MNH
$0.16United States of America – Scott No. C86 – MNH (2021 SCV $0.30) De Forest AudionsFaults or Other Considerations: None noted.Keywords: backbook; airmails; year1973; inventions SKU: USAC086-20