Historical clue formulations

• Classic figure killed off in a 2019 Super Bowl ad campaign — 2021-01-21
• Shelled shill — 2016-05-14
• Mascot since 1916 — 2013-02-08
• Advertising figure with a monocle — 2012-09-17
• Nattily dressed ad figure — 2010-08-11
• Mascot that's a shell of a man? — 2010-02-27
• Advertising "spokesman" since 1916 — 2006-06-04
• Advertising figure with a cane — 2004-05-30
• Monocled advertising figure — 2001-02-22