They are commonly referred to as toilet seat lid type, I wonder why. Yes used on early cars until there were incidents like Asnake refers to. Then there were some guys taking them racing that needed quick hood access hence the teardrop handles. Then Wilmot Breeden did a suitable handle used with a circular base plate that went the rest of Cobra and 427 production. These handles were a locking type with a lock barrel available but had blanking plugs in place of the locks in Cobras and 427's.