(Sonoma) Duncan's Mill, Cal., Apr 16 (1862), unusual postmark (SON-1250) on well traveled cover from N.Y. to Duncan's Mill and then forwarded to San Francisco with "fwd 3c", where it was "Advertised 1" and "Not Called For"; various notations on cover, some corner wear, F.-V.F., 1 of 2 known, ex-Tatham. Estimate  $200 - 300. $0 (Image)