PP9 BATTERY ADAPTER (& BATTERY) FOR PP3. TRANSISTOR RADIOS DECCA, BUSH, HACKER

PP3 TO PP9 BATTERY ADAPTOR & GP PP3 BATTERY. This will let you use a PP3 battery instead of a PP9 Battery. 1 X ADAPTOR PP9 to PP3. 1X ENERGIZER PP3 9V BATTERY. This adapter lets you use inexpensive contemporary batteries instead.

eBay