Large-format vintage Sinclair Aircraft advertising sign featuring the iconic green airplane graphic within the classic red, white, and green Sinclair circular design. This impressive 48-inch diameter round sign is double-sided, making it especially desirable for collectors and display settings where visibility from both sides is important.

Constructed of porcelain enamel on steel, the sign retains strong color saturation and gloss on both sides. The design reflects Sinclair’s aviation-era branding and includes the aircraft motif associated with the company’s historic marketing. Marked along the lower edge “REG. U.S. PAT. OFF.”, consistent with period production.

Condition is consistent with age and display use. Both sides show edge wear with scattered chipping and oxidation along the rim, including areas of exposed steel, as well as surface scratches, small nicks, and general handling marks. Mounting holes are present at the perimeter. Despite these signs of age, the sign presents very well overall and remains a bold, eye-catching display piece.

Due to its large 48-inch round size, double-sided construction, and substantial weight, this is a standout example suitable for advanced collectors of petroleum, aviation, and Americana advertising.

Dimensions:
Diameter: approx. 48 inches
Weight: approx. 40 lbs (rough estimate)

Condition:
Vintage condition with visible edge chipping, rim wear, oxidation, scratches, and surface marks consistent with age and use. No structural bends observed. Please review all photos carefully for condition details.

Shipping:
Shipping will be higher than standard due to the sign’s large size (48") and weight. Professional packing and insured shipping will be required. Local pickup may be available by arrangement. Vintage condition with visible edge chipping, rim wear, oxidation, scratches, and surface marks consistent with age and use. No structural bends observed. Please review all photos carefully for condition details. Personal Collection

Grandview Art & Auctions provides in-house shipping services for most small to mid-sized items as a courtesy to our buyers.

In-House Shipping

Following payment clearance, items will be professionally packed and invoiced for shipping. Buyers will receive a separate shipping invoice reflecting packing materials, labor, insurance, and carrier charges.

Shipping invoices must be paid prior to release.

We ship via insured carriers and select the most appropriate service based on item size, value, and destination.

Oversized / Specialty Items

Large, fragile, or specialty items may require third-party handling. In such cases, buyers will be provided with recommended professional shippers and will coordinate directly with the carrier.

Transfer of Risk

Risk of loss transfers to the buyer upon delivery to the carrier. All shipments are insured for the declared value unless otherwise requested.

Pickup

Local pickup is available by appointment following payment clearance.

International Shipping

International buyers are responsible for all customs duties, import taxes, and regulatory compliance. Certain materials may be restricted from export.