A gold and green S1 'contagiri' - rev counter?
But such a thing doesn't exist, I hear the experts say.
Probably some know better, but I certainly haven't seen one, or heard of one before, but browsing some Italian ads online today I happened on the item below. I'd love to have it for my B10, but sadly it comes with a B10 attached, for 20k Euros.
Ad is here:
https://www.autoscout24.it/annunci/lancia-others-benzina-nero-453f8a70-3545-b424-e053-e350040af438?cldtidx=5