1927 Article Science Invention Radio Beam Directs Aircraft Blueprint JP SI1
$43.95
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This is an original 1927 one-page article (one single-sided page) by Paul Welker on how a radio beam was designed to direct aircrafts and ships.CONDITIONThis 85+ year old Item is rated Very Fine +++. No creases. No natural defects. No surface rub. No tears. No water damage. Product Type: Original Print Article; Black / White Grade: Very Fine +++ Dimensions: Approximately 7.5 x 10.75 inches; 19 x 27 cm Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation) SI1C27
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