Check the listing for details. Harley-Davidson Motorcycle 12-in Round Genuine Motor Oil Aluminum Vintage Sign ]. Condition: New. Listed at 28.99 USD. The Harley-Davidson Motorcycle 12-in Round Genuine Motor Oil Aluminum Vintage Sign is a nostalgic and authentic piece of American motorcycle history. Featuring the iconic Harley-Davidson brand, this sign showcases the classic design and craftsmanship of vintage motorcycles. Made from durable aluminum, it is a perfect addition to any motorcycle enthusiast's collection or as a stylish decor piece for a garage or man cave. Its round shape and detailed design make it a standout piece for fans of Harley-Davidson and motorcycle memorabilia.The Harley-Davidson Motorcycle 12-in Round Genuine Motor Oil Aluminum Vintage Sign is a nostalgic and authentic piece of American motorcycle history. Featuring the iconic Harley-Davidson brand, this sign showcases the classic design and craftsmanship of vintage motorcycles. Made from durable aluminum, it is a perfect addition to any motorcycle enthusiast's collection or as a stylish decor piece for a garage or man cave. Its round shape and detailed design make it a standout piece for fans of Harley-Davidson and motorcycle memorabilia.