Buy polished antiqued copper weathervanes from Glenview Products Call +61 0411 732 950. Browse through our attractive selection. Antiqued or pre aged weathervanes have been treated to appear weathered. That appearance comes from being exposed to the weather. Copper objects oxidise on the surface when exposed for lengthy periods. The verdigre formation that results is very sort after. Patina is another name for this. I have crawled over many old buildings to check out old weathervanes. Some of them have been there for over 100years. To discover that they still work is incredible.