Noun
museum piece (plural museum pieces)
(slang) A very old item, especially an obsolete piece of technology.
Jim's car is a real museum piece.
A Sinclair Spectrum computer is now just a museum piece.
Clear out 800,000 people and preserve it as a museum piece. Frank Lloyd Wright
"Museum Piece" Captain America v3, 3 (March 1998) or even a photonic energy shield designed to mimic a vibranium matrix. Source: Internet