As seen in Spectre (2015), this is a polished silver metal Jaguar C-X75 keychain.
Backstory. Bond is pursued by the Jaguar C-X75 which is driven by villain, Hinx, in a chase around Rome.
Details. The keyring features a 3D replica of the Jaguar C-X75 in die-cast polished zinc alloy metal and is presented in a black gift box.