![]() Regardless of its color or whether it is naturally occurring or has been induced with chemical substances, the patina should be even and richlyhued. ![]() The color of the patina can vary from reddish to warm brown, green, or even yellow depending on the amount of copper in the alloy. The patina which develops naturally on the surface of the sculpture can indicate the quality of the alloy used. Important things to note when determining the quality of a bronze sculpture include the exactness of the casting to the artist’s model, particularly its surface texture quality and the accuracy of subtle details such as fingers. Various defects, such as gas porosity – the formation of bubbles within the cooled casting – or coldfront – the imperfect fusion of two fronts of liquid metal – can affect the alloy’s strength, appearance, and durability. Though Bronze has remained relatively unchanged since the alloy combining copper and tin was first discovered, a sculpture’s quality is still very dependent on how well it is cast. What should I look for in a bronze sculpture? Bronze is an inherently durable alloy which, with some care, can retain its original condition and quality for decades and centuries. Specialized bronze cleaner and a soft sponge. This verdigris acts as a shield preventing any significant corrosion, but can also be easily removed without harming the sculpture’s integrity or durability. This is caused by the oxidation of the alloy during which a very superficial layer reacts to the oxygen in the air and becomes copper carbonate. It remains the most desired material for monumental statuary.Īs bronze ages, verdigris – a blue-green patina – forms on the surface. The alloy has been used around the world since antiquity, including by the ancient Greeks, who considered it the highest form of sculpture and were the first to scale bronze figures to life-size. The material is in fact so durable, that despite the earliest known cast bronze dating back to 2500 BCE, there are comparatively few examples of large bronze casts because, as boundaries changed and kings fell, they were often melted down and repurposed. The alloy is particularly strong, ductile, and, because its oxidation process prevents corrosion, extremely durable. Two forms of tin bronze were used during the Bronze Age, ‘mild bronze’ – which was 6% tin, hammered thin, and used for objects such as armor – and ‘classic bronze’, a composite with 10% tin that is still used for casting objects today. Though pre-dated by another bronze alloy combining copper with arsenic, tin bronze has remained relatively unchanged since its discovery in the 3rd millennium BCE. If for any reason you are not satisfied with your purchase or my service, please contact me before leaving any negative feedback.Bronze is an alloy dating back to 4500 BCE composed of varying amounts copper and tin. I strive for no less than a five star rating in each of the performance categories. FEEDBACK: I leave positive feedback as soon as a payment is received. My item descriptions are to the best of my knowledge, so when in doubt, please ask questions. TERMS OF SALE: Any item may be returned within 14 days, unless sold "As Is". Shipping costs are specific to each item in order to provide the least costly method of delivery. All items are shipped with Delivery Confirmation. A small handling fee is included in the price for packing materials and other costs incurred with processing and transporting. ![]() SHIPPING: I only ship in the US and Canada. Payment is due within 3 days of auction end. You'd be surprised at the many offers I've accepted in the past! PAYMENT: The winning bidder pays postage as stated. ![]() Very nice!BUY IT NOW: If this is a Buy It Now listing, please don't hesitate to make an offer. Each one measure 5" tall, 6.5" long, and 3" wide. They are inscribed ART BRONZ and you can see remants of the (c)KBW mark. They are bronze-clad and have a warm patina. ![]() These gorgeous bookends by KBW, Kathodion Bronze Works, are circa early 1900s. ![]()
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