Need a small speedo

Long time, been busy, dont get pissed at me for this post. I need a old Smiths speedo or speedo from another brit manufacturer to fit a 60mm opening in a headlight, the od should be near about 65mm and the top speed should be a smoking 80mph. I'm sorta hoping that one of you fine gentlemen has one in a cardboard box in a dusty garage somewhere.......Its not for my Comando which is coming along nicely although the wait for important yet tiny spare parts from up and over or straight up is driving me nuts.







Its for my 66bsac15....

Chris in Omaruru