Sorry guys,
those coronets and armorial barings are simply symbols to represent the Knights of the Order of the Garter in St. George's chapel. It's like a signature.
The physical features of the coronet of a Baron/Baroness is accurately reproduced in the top picture.
Every member of the British Royal family, and Peerage is entitled to wear a coronet, with the exception of Her Majesty Queen Elizabeth II who wears a crown. I descending order they are describes as having the following symbols arranged arround the coronet:
Duke/Duchess: Eight Strawberry leaves.
Marquess/Marchioness: Four Strawberry leaves alternating with four silver balls.
Earl/Countess: Eight silver balls on stalks alternating with eight gold strawberry leaves.
Viscount/Viscountess: Sixteen silver balls.
Baron/Baroness: Six silver balls.
These symbols aren't meerly historical dress, but are worn by all those with titles above Baronet at the coronation of monarchs. In addition to having to wear these coronets, the appropriate coronet is added to your armorial bearings (family coat of arms), on either recieving a peerage or being promoted within the peerage eg: Earl to Marquess etc.