I have 1960 R69. Engine #654654.I also have the solo gearbox. It has 43000miles on it. Your bike is 1 of 2,956 models made as is mine also is.Don't ever sell it! We own pieces of history,and also is a very rare bike&expensivly hard to get parts for.
Antipodean
I recently purchased an R69 engine number 654332, from the Philippines. It was believed to be a 1960 machine. The speedo is in miles. It has the S gearbox.
I am seeking any thing about its history.