Controversy has landed! The picture taken from this 1840 daguerreotype is supposed to feature Mozart’s widow Constantine with the Keller family. So what is mysterious about that? Constantine was 78 years old in that year and crippled by arthritis (died 2 years later) and there was no way she could have travelled the distance that had to be covered to visit the house of the Keller, yet it clearly shows it is her. There are no traces of that trip ever been done, no expenses to justify it or correspondence to back it up, but if it actually is her, it could open an exciting new line of research.