When did Luther nail the proclamations to the church door?
Ninety-five Theses
Luther sent the Theses enclosed with a letter to Albert of Brandenburg, the Archbishop of Mainz, on 31 October 1517, a date now considered the start of the Reformation and commemorated annually as Reformation Day. Luther may have also posted the Theses on the door of All Saints' Church and other churches in Wittenberg in accordance with University custom on 31 October or in mid-November. The Theses were quickly reprinted, translated, and distributed throughout Germany and Europe. They initiated a pamphlet war with indulgence preacher Johann Tetzel, which spread Luther's fame even further. Luther's ecclesiastical superiors had him tried for heresy, which culminated in his excommunication in 1521. Though the Theses were the start of the Reformation, Luther did not consider indulgences to be as important as other theological matters which would divide the church, such as justification by faith alone and the bondage of the will. His breakthrough on these issues would come later, and he did not see the writing of the Theses as the point at which his beliefs diverged from those of Rome.
Luther rose
The Luther seal or Luther rose is a widely recognized symbol for Lutheranism. It was the seal that was designed for Martin Luther at the behest of John Frederick of Saxony in 1530, while Luther was staying at the Coburg Fortress during the Diet of Augsburg. Lazarus Spengler, to whom Luther wrote his interpretation below, sent Luther a drawing of this seal. Luther saw it as a compendium or expression of his theology and faith, which he used to authorize his correspondence. Luther informed Philipp Melanchthon on September 15, 1530, that the Prince had personally visited him in the Coburg fortress and presented him with a signet ring, presumably displaying the seal.