Historical clue formulations

• Something unoriginal — 2024-02-23
• Monet that isn't worth much money, say — 2018-08-03
• The statue "David" on open-air display in Florence, e.g. — 2014-09-24
• Model plane, e.g. — 2014-02-26
• Dupe — 1995-10-26
• Facsimile — 1994-08-25