Lets Play a game

You couldn;t get 1/4s for those cars for years. Not sure but you may still not be able to. So it lends itself to "creative" artisitic attempts...lol. The filler on the quarters I'm replacing on my '65 is at least 1/4", nevermind the 5 paint jobs over it. It lasted pretty well and the rivets on the patches aren't even rusted...lol.
I'd bet that's only 1/8 or so but the metal was flexing underneath it so it's breaking along the patch line.