: Some academic journals use these digits in their serial numbers. For example, the online version of the journal Food Science and Technology (Campinas) uses ISSN 1678-457X . 3. Finance and Markets
: An observer using a 16-inch telescope might "bump the mag up to 457x" to view fine planetary details or resolve tight double stars.
: Specific researchers may have IDs containing these digits (e.g., Laura R. Shapiro ). : Some academic journals use these digits in
The 457X is a rare export-market radio designed by the pioneering American industrial designer in 1936 . Teague is famous for creating the iconic "Bluebird" and "Nocturne" glass radios, but the 457X is often considered his most aggressive and sophisticated "Streamline Moderne" work. Key Design Features
I can provide more detail if you are: Restoring a Sparton radio and need technical specs. Finance and Markets : An observer using a
: It is characterized by high-quality grey mirrors set against a contrasting ebony (black) lacquer finish.
: The "Euro-Sled" nickname comes from its low, sleek profile and the horizontal lines that resemble a sled or a high-speed locomotive from the period. The 457X is a rare export-market radio designed
: This specific model was produced by the Sparks-Worthington Company of Jackson, Michigan, primarily for the European market, making it significantly rarer than domestic Sparton models. 🔭 Secondary Technical Meanings