Presto Cigarette Case Corp.
Listed under Silversmiths.
Poole & Roche
See Poole Silver Co. in Silversmiths section.
Poole Silver Co.
Listed under Silversmiths.
Porter Britannia & Plate Co.
Taunton, MA  1859-1870s
Pure Silver Plate
A trademark of Wallace Silversmiths.  See flatware patterns.
Providence Silver Plate Co.
A trademark of the Aurora Silver Plate Co.
Puritan Silver Co. / Puritan Plate
Originally a trademark of Wm. A. Rogers, Ltd. which was
later used by Oneida.  See
flatware patterns.
Prestige Plate
A trademark of Home Decorators, a direct sales company.  
Flatware was made by Oneida Silversmiths.  See
flatware patterns.
Plymouth Silver Plate
A trademark of International Silver.  
See
flatware patterns.
Primrose Plate
A trademark of Henry Birks & Sons, Ltd., Montreal, QU, Canada
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Plymouth to Puritan
Plymouth to Puritan