Materassi in Fiat at 1920 Coppa delle Consuma, a 16 km race in Tuscany. He won the class between 2,5 and 3,5 litri with this Fiat 20-30 HP.<a rel="nofollow" class="external text" href="https://www.fondazionepirelli.org/archivio-storico/fotografie/detail/IT-PIRELLI-FT0001-0000000298/coppa-della-consuma-del-1920.html">says Pirelli</a>  On June 20, 1920 according to <a rel="nofollow" class="external text" href="http://www.kolumbus.fi/leif.snellman/hca2.htm">kolumbus.fi</a>
Unknown photographer
<a rel="nofollow" class="external autonumber" href="https://scontent.fsvg2-1.fna.fbcdn.net/v/t1.0-9/431296_394692597209195_1935118755_n.jpg">[1]</a>