1960's El Paipo Knee Machine 54 Serial Number 982. Minor damage to nose and tail. The item "El Paipo 1960's Vintage Knee Machine 54" is in sale since Monday, July 22, 2019. This item is in the category "Sporting Goods\Water Sports\Surfing\Vintage". The seller is "andarcha-0" and is located in San Pedro, California. This item can't be shipped, the buyer must pick up the item.