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Indian Motorcycle Engine Stamp Guide: Scout, Chief & Four (1922–1953) Restoration Reference
Where did Indian Motorcycle stamp engine and frame serial numbers on Scout, Chief, and Four models (1922–1953)? This complete restoration guide covers stamping locations by era, how the number format changed, and the correct stamp kits for each period of Indian Motorcycle production.
Harley-Davidson Engine Stamp Guide: Panhead, Knucklehead & Shovelhead Restoration
Where did Harley-Davidson stamp engine and frame serial numbers on Knucklehead, Panhead, and Shovelhead motorcycles? This restoration guide covers stamping locations, number formats by era, star stamp identification, and every period-correct stamp kit for pre-1970 Harley restoration.