Vintage M Frame on the Gurney

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This is a useful article on the various generations:

This History of Oakley M Frame

First introduced in 1989 as the “Mumbo,” the M Frame has long been a staple in the Oakley line-up and will likely endure for years yet to come. But while the frame shape has more or less remained constant, the iconic sunglasses have seen some tweaks through the decades. The initial release...

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