Hi,my name is kevin(b-1973), my grandfather is named Elmer Fredrick (b1903) from detroit(not born there). we have an old safe in the basement with F.E. Gnadt on it and my dad Fredrick Elmer said it was from my greatgrand father. Also, I live in the Netherlands, and was told that Gnadt is from the southern region of germany (Munich) is this true?