The Young Guard Cavalry units of the Old Guard Cavalry did not carry eagles, could they carry other étendards - remains speculation, did such exist, there are a few known like for Grenadiers à Cheval or Mameluckes.
According the Souvenirs of Lt. Chevalier the Eagle of the Chasseurs à Cheval de la Garde Imériale - the pole carrying it was gilded and not painted blue as usually, this is in the book by Charrié, p. 181, as well as other details.
Charrié, Pierre : Drapeaux et étendards de la Révolution et de l'Empire, Paris, Copernic 1982
The Young Guard Cavalry units of the Old Guard Cavalry did not carry eagles, could they carry other étendards - remains speculation, did such exist, there are a few known like for Grenadiers à Cheval or Mameluckes.
According the Souvenirs of Lt. Chevalier the Eagle of the Chasseurs à Cheval de la Garde Imériale - the pole carrying it was gilded and not painted blue as usually, this is in the book by Charrié, p. 181, as well as other details.
Charrié, Pierre : Drapeaux et étendards de la Révolution et de l'Empire, Paris, Copernic 1982