1958 MG Magnette ZB Saloon
The ZA and ZB Magnettes were based on the Wolseley 4/44 and were built from 1953-58. 1956 models on were known as ZBs (bottom photo). ZBs had a larger engine than the ZA, 60bhp to 68.4bhp. Austin engines both models. Approximately 36,600 Z-series Magnettes were built with a nearly 50/50 split. I'd bet this wheel and cap would fit my '52 TD.