N.S.W. Ambulance Service MedalN. S. W. Ambulance Service Medal Full size medal Unmounted with 15cm ribbon as required for swing mounting. Miniature size medal Unmounted with 10cm ribbon as required for swing mounting. In November 2005 the Ambulance Service Long and Diligent Service Medal (previously circa 1938) was reintroduced. The new medal to be known as the Ambulance Service of NSW Long Service and Good Conduct Medal will be issued to all Ambulance personnel with a service of