A question of faces

Here’s a little question for you.
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Suppose, when you were in your younger years and your shining days, you had a collection of masks, some of gold and some with emerald eyes.
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Suppose that one day, you liked the mask you were wearing so much that you wore it all day, and then you wore it again the next day, and all the next day too.
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Suppose you never took it off, and you wore it so long that you forgot it was a mask.
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Which, then, would be your real face?
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(My own photo of Venetian carnival performers, Annecy, France, February 2008)