1923 Rotogravure Wireless Radio Tuning Coil Code Typewriter Scientific Advances
This is an original 1923 sepia rotogravure with three images of wireless radio: the multiple tuning coil used for ocean messages at Rocky Point, Long Island being examined by F.F.W. Alendersson, the inventor of the alternator; a code sending and receiving radio; and Major Gen. George O. Squier, the Chief Signal Officer of the Army demonstrating the ease with which the radio aerial may be dispensed with by plugging a receiving set wire into an electric light socket.
CONDITION
This 91+ year old Item is rated Very Fine +++. No creases. No surface rub. No tears. No water damage. There is printing on the verso. Please note that the small white marks in the top margin are just reflections on the digital image -- they are NOT on the item.
- Product Type: Original Rotogravure; Sepia
- Grade: Very Fine +++
- Dimensions: Approximately 9.75 x 14.75 inches; 25 x 37 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)
Period Paper is pleased to offer a collection of original rotogravures from 1923. These images provide us with fascinating "snapshots," so to speak, of historical events, people and places -- a virtual treasure trove for the collector of historical memorabilia from the early 20th century.
About Rotogravure:
Rotogravure is a printing method using a rotary press with intaglio cylinders which allows for very high quality halftone reproductions to be printed at high speed on inexpensive paper stock. Newspapers, beginning with The New York Times, were able to make effective use of this technology, and many published regular rotogravure pictorial sections in their publications during the early 20th century.RTO8C23