*Limited* Sinclair Aircraft Double-Sided Large Porcelain Enamel on Steel (DS 30-Inch)

Celebrating the aviation heritage of the Sinclair brand, this 30-inch double-sided porcelain enamel sign features the iconic Sinclair Aircraft logo — a design that once symbolized innovation, speed, and American pride. Built from heavy-gauge steel and kiln-fired for lasting color, it captures the depth, gloss, and quality that defined true early aviation-era advertising.

Part of our Double-Sided Limited Release Series — once sold out, this design will not be reproduced.

Key Features

• 30" diameter
• Double-sided porcelain enamel finish
• Heavy-gauge steel construction
• Authentic Sinclair Aircraft vintage artwork
• Kiln-fired for long-lasting color and gloss
• Hand-punched mounting holes
• Suitable for indoor or outdoor display