The pottery
Useful ware with a century of production.
The Robinson-Ransbottom Pottery Company formed in 1900 in Roseville, Ohio. Collectors often shorten the name to RRPCo or Robinson Ransbottom. Its durable stoneware was produced in large quantities and sold for household, commercial, and garden use.
The long production span means a mark can identify the company without precisely dating the piece. Form, decoration, clay, glaze, and catalog evidence are all needed for a narrower range.