I gave it to a professional.
The challenge seemed to be the hand, if I recall, and the "central" rivet - the plate is held by a pressed "collar" around the hand axis hole. You do not see this place once the hand is on and most of the area is covered by another plate that goes on top of the center part of the speedo, so even if you scratch it, you may get away with it. But my worry was damaging hand while trying to take it off the axis.
But it was me - for a better skilled person and perhaps with some tips on how to remove the hand safely - it may work.
Other point is - if you have the speedo out, maybe it is good to check it, lubricate it, clean it, replace the bulbs etc.