The Luther rose or Luther seal 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 15 September 1530, that the Prince had personally visited him in the Coburg fortress and presented him with a signet ring, presumably displaying the seal.

Rodgau is a town in the Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany. It lies southeast of Frankfurt am Main in the Frankfurt Rhine Main Region and has the greatest population of any municipality in the Offenbach district. It came into being in 1979 when the greater community of Rodgau was raised to town, after having been formed through a merger of five formerly self-administering communities in the framework of municipal reform in Hesse in 1977. The current constituent communities’ history reaches back to the 8th century.