New England Glass Works (American, 1818-1888), Black-Amethyst Sinumbra Lamp, 1830-1835, Translucent dark amethyst glass appearing black, pressed, with patinated copper alloy (brass) fittings and iron alloy lamp mechanism, a blown transparent colorless glass shade, ground and wheel-cut, and a transparent blown glass chimney (replaced), 17 1/2 in., 2016.214.
The notion of intellectual property—the idea that artists’ works belong to them—dates at least to medieval Europe, though history records examples of the concept as early as ancient Greece. It had taken hold sufficiently during the Renaissance for Michelangelo to take umbrage when his work was misattributed. It was reported that when he discovered that another artist was receiving credit for sculpting the famous Pietà (now in St. Peter’s Basilica in Rome), Michelangelo returned with his chisel and added his signature across the centre of the sculpture, on the prominent sash across Mary’s upper body (in Italian): “Michelangelo Buonarroti, Florentine, made this.”
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