457x

: 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

Looking for a specific linked to that ISSN or ORCID. Laura R Shapiro (0000-0002-3276-457X) - ORCID : This specific model was produced by the

: It is characterized by high-quality grey mirrors set against a contrasting ebony (black) lacquer finish. primarily for the European market

: Specific researchers may have IDs containing these digits (e.g., Laura R. Shapiro ). the 457X features a bold

: Unlike most radios of the era, the 457X features a bold, unbalanced geometric shape that creates a sense of movement.