Lot
360 
(Town & County) Mark West, Sonoma Co., Cal., Oct 15, 1881 (Sonoma), serrated oval T&C date stamp (Williams unlisted) on cover to Seattle, W.T., franked with 1¢ Banknote pair tied by target handstamps; right stamp with corner crease, a Very Fine strike, a very rare unlisted postmark, with only two examples we know of. Estimate $150 - 200.
This Mark West town & county oval postmark is similar to the following postmark used during 1887-91 (SON-3460). This postmark differs as the county and state designation is in one straight line and the oval is serrated.
Realized: $240