Stereoscopic daguerreotype in a case, of a woman, probably dressed in mourning clothingPalmquist, Peter E. (1936-2003)circa 1853-54engTwo ninth-plate daguerreotypes to form a stereoscopic pairQuarter-plate thermoplastic case with Mascher viewer built in, imprinted "MASCHER'S IMPROVED STEREOSCOPE / PHILADA. / PATENT / MARCH 8TH 1853"; printed label in case, "FROM R. H. VANCE'S / DAGUERREAN ROOMS / SAN FRANCISCO, SACRAMENTO, & MARYSVILLE, / CAL."Imprint on case medallion, "OUR FATHER WHICH ART IN HEAVEN HALLOWED BE THY NAME / BUT DELIVER US FROM EVIL / MATTHEW V VI. 9"