I have 4 chains of different lengths and brands. I believe the shortest one is a Diamond chain and around 51” first photo. All the chains are uncleaned and will need some work to make them usable.

The vintage skip tooth bicycle chain is a unique and nostalgic piece for collectors and enthusiasts of vintage bicycles. This chain features a skip tooth design, where every other tooth is missing, giving it a distinctive appearance. Its classic design and durable construction make it a valuable addition to any bicycle restoration project or vintage bike collection.