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California: Los Berros 1888 #213 (2) Legal Size Cover, DPO San Luis Obispo Co
£32.56From United States£1.45 postageCalifornia: San Jose 1945 Southern Pacific Railroad Lines Cover, Buy War Bonds
£10.85From United States£0.72 postageCalifornia: Colony Center 1906 Cover + Letter, RARE DPO Merced Co
£43.42From United States£1.45 postageCalifornia: Bartlett Springs 1891 UPS Postal Card to London Forwarded to Antwerp
£25.33From United States£0.72 postageCalifornia: San Fran 1926 #C6 on 2c Entire Lazare Klein Airmail Cover to Boston
£21.71From United States£0.72 postageCa: Sacramento 1927 07/01 Special Delivery Flight Cover, Tied Canadian Stamps
£43.42From United States£1.45 postageCalifornia: San Francisco 1925 #C5 Pacific Nash Motor Co Airmail Cover to Ohio
£36.18From United States£1.45 postageRPO: Los Ang & San B'D'No 1930 Philatelic Postal Card, California Railroad
£18.09From United States£0.72 postageCalifornia: San Francisco 1886 Block Traveling Trunks, Valises Advertising Cover
£18.09From United States£0.72 postageCalifornia: San Fran 1918 Zellerbach Advertising Mailed Blotter Perfin Stamp
£14.47From United States£0.72 postageCalifornia: San Diego 1926 Park Hotel Advertising Cover
£10.85From United States£0.72 postageCalifornia: Oakland 1898 Gray's Poultry Farm Chicken Advertising Cover
£10.85From United States£0.72 postageCalifornia: San Francisco 1899 Transvaal Shoes Both Sides Advertising Cover
£18.09From United States£0.72 postageCalifornia: San Fran 1912 Overland Freight Transfer Cover, Panama-Pacific Expo
£18.09From United States£0.72 postageCalifornia: San Francisco 1896 Socialist Labor Party Advertising Cover
£43.42From United States£1.45 postageCalifornia: Riverside 1920s County Recorder Building Advertising Cover
£14.47From United States£0.72 postageCalifornia: Placerville Long Pine Poultry Chicken Illustrated Advertising Cover
£16.28From United States£0.72 postageCalifornia: Ophir 1894 #231 Cover, DPO Placer Co
£21.71From United States£0.72 postageCalifornia: Grayson 1899 2c Entire Cover, DPO Stanislaus Co
£18.09From United States£0.72 postageCalifornia: White Oak Lodge 1932 Cover, Violet CDS, SCARCE DPO Kern Co
£32.56From United States£0.72 postageCalifornia: Routier Station 1898 Cover, SCARCE DPO Sacramento Co
£32.56From United States£0.72 postageCalifornia: New Hope 1881 Cover, Violet CDS with Ms Date, San Joaquin Co
£32.56From United States£0.72 postageCalifornia: North San Juan 1860 #U16 10c Entire Transcontinental Cover to Ct.
£54.27From United States£1.45 postageCalifornia: Grant Springs 1884 2c Entire Cover, SCARCE DPO Mariposa Co
£28.94From United States£0.72 postageCalifornia: San Francisco 1850s #U18a, 10c Entire Cover to New York City
£54.27From United States£1.45 postageCalifornia: San Francisco 1888 Grangers Bank Illustrated Advertising Cover
£14.47From United States£0.72 postageCa: San Francisco 1902 #281 (strip/4) on 5c Columbian Entire Cover to Guatemala
£54.27From United States£1.45 postageCalifornia: San Francisco 1870s Hingham Sewing Machines Advertising Cover
£10.85From United States£0.72 postageCalifornia: Pasadena 1947 Human Engineering Lab Cover, Mailed from Pasadena
£14.47From United States£0.72 postageWells Fargo: Petaluma, California 1860s (late) 3c Entire Cover, Blue Ovals
£21.71From United States£0.72 postageCalifornia: Teralta 1911 Steamer Yale Postcard, SCARCE DPO San Diego Co
£18.09From United States£0.72 postageCalifornia: Happy Camp 1897 Uprated 2c Entire Cover to Paris, France
£28.94From United States£0.72 postageCalifornia: Oroville 1875 3c Banknote (2) Cover to Ireland, Irish RPO on Back
£14.47From United States£0.72 postageCa: San Francisco 1905 1c Postal Entire Cover to Singapore, via Empress of Japan
£28.94From United States£0.72 postageCalifornia: Gilroy 1892 Uprated Postal Card to Berlin, Santa Clara County
£25.33From United States£0.72 postageCalifornia: Huntington Lake 1916 Cover, Straight Line Cancel Early Cancel, DPO
£25.33From United States£0.72 postageCalifornia: Sacramento 1894 Hall, Luhrs Co Ham Advertising Cover ~ Great Pig!
£36.18From United States£1.45 postageCalifornia: San Francisco 1850s Stampless Cover, Scarce Drop Boxed 2 Rate HS
£126.63From United States£2.89 postageCalifornia: San Diego Exposition 1916 International Harvester Cover
£180.90From United States£2.89 postageCalifornia: Riverside 1906 Allover Reverse Ad Cover, Violet RFD #2 Cover
£14.47From United States£0.72 postageCalifornia: San Francisco 1897 Harry Unna Feather Duster Advertising Cover
£25.33From United States£0.72 postageCalifornia: San Francisco 1880s #183 Art Association Peacock Advertising Cover
£54.27From United States£1.45 postageCalifornia: San Fran 1899 William Cuff Champion 5c Cigar Dog Advertising Cover
£36.18From United States£1.45 postageCalifornia: San Fran 1899 Freygang-Leary Printers Bookbinders Advertising Cover
£16.28From United States£0.72 postageCalifornia: Napa City 1880 Slocum, Bowen County Historians Advertising Cover
£32.56From United States£0.72 postageCalifornia: Chico 1909 Chamber of Commerce Illustrated Advertising Cover
£28.94From United States£0.72 postageCivil War: San Fran, California 1862 #63 & 65 (3) Camp Alert Cover to NY
£253.26From United States£2.89 postageCalifornia: Hill's Ferry 1876 3c Banknote Cover + Letter, DPO Stanislaus Co
£54.27From United States£1.45 postage