Hi ATRSS, According to Roy Bacons book it is a 1961. If there is anything to indicate it,s original registration, such as an old tax disc or even the old number plate then it may be possible to regain the original registration. if not it will have to have an age related number. If you contact Mike Worthington Williams, he can provide a dating certificate and indicate the documents that you require. he charges £30 for doing it. His email is worthycomments@btconnect.com. All the best with it Goldy