Hello, anyone who knows from what year this old original Fiat tool is from? It's heavy so I guess its cast iron. 17 mm and 13 mm.
Thanks!

Looks to me like what Fiat included in their car's standard toolkit from the 1950's (possibly earlier) to the 1980's (possibly later). Lots of them available for sale on Ebay. Iirc they were cast steel, not cast iron. The later one's c. late 1970's onwards, had a yellow finish (possibly yellow zinc or cadmium?), so your's might be earlier, these had a silver (possibly bright zinc?) finish.

If you do an Ebay search using the term 'Vintage Fiat Tools', you'll see all the other tools that used to be in Fiat's car toolkits.

Al.

As already posted it is one of the spanners from old Fiat Tool Kits. I have the same from my Fiat 600D (my first Fiat )

https://www.google.co.uk/imgres?imgurl=https%3A%2F%2Fwww.picclickimg.com%2Fd%2Fl400%2Fpict%2F192563383506_%2FFiat-500-Tool-Kit-Genuine-Vintage-Tool-124.jpg&imgrefurl=https%3A%2F%2Fpicclick.co.uk%2FFiat-500-Tool-Kit-Genuine-Vintage-Tool-124-192563383506.html&docid=EwrWLjew6u8ZeM&tbnid=w7R8PXRdmgxQ2M%3A&vet=10ahUKEwiS2Nm9sL7kAhWKEBQKHeBZCe8QMwhUKA8wDw..i&w=400&h=333&itg=1&bih=896&biw=1415&q=vintage%20fiat%20toolkit%20grey%20box&ved=0ahUKEwiS2Nm9sL7kAhWKEBQKHeBZCe8QMwhUKA8wDw&iact=mrc&uact=8

Spare vintage emergency tools in the car