VS1BF 1946 Singapore

VS1BJ/F was a QSL card for two locations. The Fall 1946 Callbook has the solution, for the same operator (D. C. Finlay-Maxwell).
VS1BF: ALFSEA, Singapore
VS1BJ: Selerang Signals Barracks, Singapore

QSL G4UZN Collection
Info courtesy of W5KNE