One of the nicer derivatives of the Fiat 850 comes from Vignale. There, a new version was built based on the Fiat 850 Special, Coupé and Spider, many of which are still in use today.

850 vignale emblem

On Ebay I found this English leaflet:

Fiat 850 vignale

Fiat 850 Vignale

850 vignale 5850 vignale 4

On the Carrozzieri Italiani website you can find more images.