A proclamation is an official declaration issued by a person of authority to make certain announcements known. Proclamations are currently used within the governing framework of some nations and are usually issued in the name of the head of state. A proclamation is (usually) a non-binding notice.
Proclamation of King William III of the Netherlands regarding his accession, 1849
Handbill publishing the royal proclamation of King George I, dated 23 September 1715, for the "discovery and apprehension" of Sir William Wyndham, 3rd Baronet, the Jacobite leader
A herald, or a herald of arms, is an officer of arms, ranking between pursuivant and king of arms. The title is commonly applied more broadly to all officers of arms.
Pictures of heralds from the 14th–17th century, from H. Ströhl's Heraldischer Atlas
English and Scotish heralds, wearing tabards, in procession during the Coronation of Charles III and Camilla (2023).
Herald Gelre of the Duke of Gueldres (around 1380)
Bavarian herald Jörg Rugen [de] wearing a tabard of the Coat of arms of Bavaria, around 1510.