1928 Article Scientific Technological Radio Advancements Interference SI1

This is an original 1928 one-page article (one single-sided page) on newly developed (at the time) devices for the household radio. CONDITIONThis 83+ year old Item is rated Near Mint / Very Fine. Light aging throughout. Light creasing. No natural defects. No surface rub. No tears. No water damage. Please note that there is print on the reverse. Product Type: Original Print Article; Black / White Grade: Near Mint / Very Fine Dimensions: Approximately 7.75 x 11 inches; 20 x 28 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) Keywords specific to this image: Voltage, Coils, Condensers, DiagramsSI1A11C28