Andu I am sorry that your information is wrong.
The RAAF operated 24 Neptune aircraft
2 P2V4 that were modified on the line by Lockheed to P2V5 standard to almost the same as the other 10. These were modified over the years and all guns removed and the MAD stingers and jets installed. These were operated by 11 Squadron.
10 Squadron took delivery of 12 PV5F in 1960 I believe.
Regards
Col