The plane was a Hawker Tempest. The Version or Mark number was "V" (for five). NV660 was the serial number.
Some background on the Tempest:
https://en.wikipedia.org/wiki/Hawker...t#Tempest_Mk.V
Note there is a photo of NV696 on the wikipedia page (note serial number on tail).
https://commons.wikimedia.org/wiki/F...otype_ExCC.jpg
Wikipedia even has a colorized version:
https://commons.wikimedia.org/wiki/F...t_Nov_1944.jpg
I would guess Halliwell's plane would look the same or at least certainly very similar. What is missing are the squadron code letters and the individual plane letter.
You can see examples of those this next photo or in the video on the Tempest. The "SA" were the code letters for 486 squadron.
https://en.wikipedia.org/wiki/No._48...Camps_1944.jpg
I think 274 squadron was using "JJ". See for example, this:
http://www.luftwaffeinprofile.se/Tem...0%20D%204.html
A video on the Tempest:
https://www.youtube.com/watch?v=70Sd8h3XXvU