The Thomas Walker Patent Harpoon A1 Ship Log is a rare and valuable antique artifact from the era of 1870-1890. Made of brass in the United Kingdom, this original piece represents the maritime history of the time. As a harpoon, it was likely used for hunting or fishing, showcasing the craftsmanship and technology of that era. This unique item would make a valuable addition to any marine or maritime collection, offering a glimpse into the historical significance of ship logs and maritime activities during the late 19th century.