Hard to tell via a photo viewed on a computer screen, but my eye tells me what I'm seeing is closer to Powder. Seems to me the slightly darker and greyer Wedgwood was literally introduced about a year later (1965) to replace Powder. Of course, unless that's original paint, it's a bit of a gamble to assume what's on there now matches an original formula. Fortunately, you should be able to find a local auto body supply store, body shop (or even some NAPA stores) that could match what's on there via physically scanning the current paint and letting their computer determine the proper formula.