If it has its original number plate the prefix 'D' denotes that it was produced between 1 Aug 1986 and 31 Jul 1987. The original Mini Coopers were produced between 1961 and 2000 and were originally known as Austin Mini Coopers or Morris Mini Coopers. In 1969, however, the 'Austin' and 'Morris' names were dropped and they were known simply as Mini Coopers, as the photograph below shows.
