UPCO Pottery Planter Value Guide

This mid-century modern planter was produced by the Ungemach Pottery Company (UPCO) in Roseville, Ohio, between 1950 and 1960. It is a quintessential example of post-war American art pottery, featuring a distinctive vertical ribbing and a period-correct sage green glaze.

What affects the value of UPCO Pottery Planter?

• Condition is paramount, as chips or cracks in the vertical ribbing significantly reduce the $20-$22 market value.
• The presence of a clear, legible 'UPCO' manufacturer stamp increases desirability for Ohio pottery collectors.
• Glaze consistency and the absence of mineral staining from previous use as a functional planter affect the final price.
• Market demand for mid-century modern aesthetic pieces often drives the value toward the higher end of the $22 range.

How to Identify UPCO Pottery Planter?

• Look for the 'UPCO' or 'Ungemach' mark typically impressed or stamped on the bottom of the ceramic base.
• Identify the specific rectangular silhouette paired with uniform vertical ribbed texture characteristic of 1950s floral containers.
• Verify the authentic sage green glaze, which should have a consistent satin or semi-matte finish typical of the era.
• Check for the heavy, durable ceramic construction associated with Roseville-based industrial pottery production.

History of UPCO Pottery Planter

Produced by the Ungemach Pottery Company of Roseville, Ohio, this piece reflects the prolific American art pottery industry of the mid-20th century. UPCO was known for durable, stylish floral containers that became staples in suburban homes during the post-war era.