Your car is one of the earliest cars that we have on the register. There are only 2 earlier but I don't know if they still exist as they were registered in 1991 and 2002.
We have details of 22 cars on the register with GAN 1L chassis numbers which were registered in 1961. Of these there is one each in Holland, Luxembourg, Switzerland and Norway, and 2 in Italy. All the rest are in UK, except yours.
I don't have details whether the first 1000 stayed in UK, but I will try to find out.
Hope that this information is of use to you. If you want any more,
please ask .