Welcome to the FIAT forums Neil.
Good luck with finding the history of your dad's 600.
The first place to look is
DVLA's online vehicle checker Scroll down a little and hit the green "Start Now>" button.
I've tried the number already and unfortunately nothing shows - but are you sure that registration is correct? It looks very odd to me.
The DVLA link will (if the number is correct), show if the registration is still in use - it won't necessarily be on the same car! But it's a start.
The other thing to do is write to the
Kithead Trust giving them as much info as possible. Again though, it can be a case of pure luck.
Clutching at straws a bit, but people collect old log-books - so save a regular search in eBay for a log book of that registration. You never know...
I traced and met up with, the owner of of my 1932 MG back in the mid 1980s before we had computers.
I had the original name and address of the first owner which I'd got from MG car club records, and spent a week in Oxford library going through telephone directories listing all the C W Uptons in the UK!
I'd also visited the town where the car was delivered to and by chance, spoke to a local (elderly) post mistress that knew the family well and suggested that Carl (I now had his first name!) had gone off to Birmingham university to study and become a doctor but had probably joined the army.
The list of C Uptons from the telephone directory was huge and I didn't know where to start, but there was one that said 'Carl Upton homoepathic consultant'.
I went to the phonebox armed with £10 worth of ten pences to start going through the list but for some reason chose to make the homoepthic consultant the first call.
A young sounding woman answered the phone and I enquired if this was the residence of Mr Carl Upton and she said it was, and asked what the call was in connection with.
I explained that I had come into ownership of an old car that he'd once owned and that I was hoping to get some more information about it.
The woman asked what sort of a car it was and I told her "an MG".
She immediately said that Mr Upton had never owned an MG and sounded like she was about to hang up, but I kept my 'foot in the door' by saying "Let me give you some details about the car" and duly explained that the car had been delivered to Newton Solney on the 4th January 1933.
There was a long silence and she then said "Oh my goodness I had no idea the car was that old. But yes, you have found the right person; that was a very important time in his life, but he's now very elderly and I doubt if he will remember much about it"
It transpired that Carl never kept what was his first brand-new car for much more than 18 months, but he had a lot of fun with it having inherited a large amount of money from the great aunt of his then girlfriend who left him £200 (The MG cost £199 10 shillings).
He remembered masses of info about the car and some key thigs regarding colours that I could never have otherwise known.
More recently a photo of the car turned up on the internet (I found it by searching images with the registration number, but one day inadvertantly put the chassis number in instead) Beaulieu Motor Museum had a photo of my car.
It turned out the same photo was used in January's edition of Motorsport in 1935 - the information from the photo caption gave me the name of what I believed to have been the car's second owner and the location of the photo.
I have since traced the son of the driver whom I am now good friends with, and visited the location of the lane the photo was taken on.
Additionally not one but three log books have turned up giving names of owners from 1952 to 1963 - work is ongoing...
Essentially my message is NEVER GIVE UP looking