Knowles, Taylor & Knowles Semi-Vitreous Porcelain Value Guide

Founded in 1854 in East Liverpool, Ohio, Knowles, Taylor & Knowles (K.T. & K.) grew to become one of the largest and most influential American potteries. This semi-vitreous porcelain is highly collectible for its durable construction and the distinctive crackled glaze that characterizes many pieces from the late 19th and early 20th centuries.

What affects the value of Knowles, Taylor & Knowles Semi-Vitreous Porcelain?

• The presence and clarity of the original transfer-printed designs or hand-painted decorations.
• The extent of the crackle glaze, noting if it was an intentional aesthetic choice or a result of age-related crazing.
• Overall structural integrity, as chips or cracks in the semi-vitreous body can lower the value below the $25-$45 range.
• The rarity of the specific vessel shape or dinnerware component within the K.T. & K. catalog.

How to Identify Knowles, Taylor & Knowles Semi-Vitreous Porcelain?

• Look for the 'K.T. & K. Co.' or 'Knowles, Taylor & Knowles' backstamp on the underside of the piece.
• Identify the 'Semi-Vitreous Porcelain' mark which was a signature line for the company during the 1890-1920 era.
• Check for the characteristic crackle glaze which may appear as a fine network of lines across the surface.
• Verify the material is semi-vitreous ware, which sits between traditional ironstone and fine translucent porcelain in weight and density.

History of Knowles, Taylor & Knowles Semi-Vitreous Porcelain

Knowles, Taylor & Knowles Company, often abbreviated as K.T. & K., was a prominent American pottery manufacturer based in East Liverpool, Ohio. Founded in 1854, it became one of the largest potteries in the United States, renowned for its semi-vitreous ware, ironstone, and dinnerware. The company was particularly active during the late 19th and early 20th centuries, producing a vast array of ceramic items for homes across America. Their "Semi-Vitreous Porcelain" line was known for its durability and often featured transfer-printed designs or simple, elegant glazes. The crackle glaze seen on this piece is a distinctive characteristic, sometimes intentional and other times a result of age on certain glazes.