[nota]

looks pre war to me not 1956 more like 1936

this is a 1956 Maserati

1956 Maserati A6G/2000 Spyder by Frua | Monterey 2013 | RM Sotheby's

or a post war rerun of a pre-war car
seen here in 1947
https://stevemckelvie.wordpress.com/2013/06/11/maserati-a6gcs-a-very-nice-sports-racing-car/

more a6 pictures

https://www.google.com/search?q=Maserati+++A6&biw=1280&bih=610&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjDpPH3yffLAhXIWCYKHWPyC2wQsAQIMw#imgrc= MALoujSPphVLIM%3A