When my father died he left almost every part of a bike he had ever possessed. Unidentifiable Sturmey -Archer hub parts, old spokes, red rubber inner tubes, Chater Lea bottom brackets, the lot. I could sell most of them but right at the bottom of the pile was a little treat, an old trunk which when lifted fell apart to reveal its treasure, 75 cycling years worth of worn out old chains, rusted into a solid mass. On the plus side he had (over)stocked up on Renold chains before they stopped production for bikes, so I will never need to buy a chain.