In the antique trade, you often hear of "harlequin" pairs. But what exactly does that mean? No, it's not a sneaker, at least not to antiquarians: I always thought a harlequin meant a clown and actually it does. Here's the harlequin clown as depicted by Picasso in 1918: The term originally referenced the clown figure Arlecchino in the Italian traveling art troupe known as the Commedia dell' Arte (dating back to the 16th century). That figure is traditionally represented wearing diamond…
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