Nice 0-frame 16-gauge PH!! Congratulations!!
By the serial number it is a 1906 vintage gun. I stare at this picture and can't make up my mind if that is a 1910-style Bolt-Plate which would mean the gun was returned to Parker Bros. at some point after 1910.
136268 01 Quality PH, 28-inch Twist barrel, 0-frame.jpg