This violin is labeled Michael Weller, 1980.
Michael Weller was born in the Netherlands and trained in violin making at the Mittenwald School in Germany, graduating in 1971. Upon graduation, he moved to the United States to work for Hans Weisshaar in California until 1973. He was head of workshop at William Moennig & Son, Ltd. in Philadelphia until 1977, the year he established his own restoration business, Weller Violins, in Swarthmore, PA. He moved to the Washington, DC area in 1997, sharing a workshop with bow maker and restorer Donald Cohen for over a decade. In 2017, he moved his business to Bethesda, MD, operating from the Violin House of Weaver until his retirement in 2020.