Michel, something doesn't gel. Sure enough, as Anthony points out, it is from a 108/109 - certainly not from a 6.3 on account of the clock that's situated in the middle of the instrument binnacle. However, if you have a closer look at the instrument, you'll see speedometer readings expressed in miles, yet the speedo itself shows kilometers. What I think has happened is that the 'miles reading' interface is an accessory item and has been glued over the original readings.
Furthermore, I have a speedometer (6.3) that reads to 260 kilometers - I have been advised by members on the M100 site that there is no such part as a speedo that reads to 260 - 240 seems to be the maximum. Closer examination of my speedo indicates that an interface has been glued on - very professionally though, I must say. It certainly looks , well, genuine. Regards Styria