I do not have access to up-to-date information about the compressive strength of Germanys Selters Trachyte. However, according to a research paper published in 2007 by the Friedrich-Alexander-University Erlangen-Nürnberg in Germany, the average compressive strength of Selters Trachyte was found to be around 212 MPa. It should be noted that the compressive strength of any natural stone can vary depending on factors such as the location of extraction, the specific characteristics of the stone, and the testing method used.