That stamp was used from 1860 to 1900 or so. 3 of the 4 have the VR (Queen Victorian stamp), the other 1 PINT was marked "IMPERIAL", but all are believed to be from 1810-1890. Approx Sizes: 1 QUART YATES & BIRCH with VR475 Stamp 6" H x 7" W x 4.75" Base, 1 lb 6.6 ounce.
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