Chains of Estate

[MalcolmdeMoffat]

What do the diffrent letters on Chains of Estate mean?

I've seen "A" and "S" but have no idea what they mean.

[Karen Larsdatter]

"S" is generally thought to be short for a motto, though the exact motto to which it refers has been lost to time. (Theories include Saint Simplicius; the martyrs of Soissons, Saint Crespin, and Saint Crespinian, referring to the date of the Battle of Agincourt; the Countess of Salisbury; the Latin word Signum, for a badge of honor; the French word Souvenez, meaning 'remember'; the word Soverayne; Sanctus, Sanctus, Sanctus; Seneschallus; and Steward.) What it seems to generally signify is affiliation with the Lancastrians.

"A," on the other hand, stands for "Atlantia."

[Alcyoneus]

http://www.richard111.com/medieval_livery_collars.htm

(among other things mentioned):
• An ingenious suggestion which may bear an element of truth suggests that a flower used by Henry IV as a badge was the Forget-me-knot, known by its 14th century French name souvent vous de moy. This may perhaps appear a little too romantic even for the “age of chivalryâ€