Baroni mail no

I think you meant to type "Baronial Mail No."!

Baronial Mail No. is a term used in the Society for Creative Anachronism (SCA), a medieval reenactment organization. It refers to a specific type of mail (armor) worn by a Baron or Baroness, which is typically decorated with their coat of arms or other heraldic devices.

In the SCA, a Baronial Mail No. is a unique identifier assigned to a Baron or Baroness, similar to a coat of arms. It is used to identify the individual and their rank within the organization.