Many people who are interested in antique pianos will certainly welcome information that reveals at what age a piano is considered antique. The fact of the matter is that such antique pianos are generally upright pianos or even are those pianos known as grand pianos and which were built at least one hundred years back. However, it is necessary to distinguish antique pianos from earliest know keyboards which are not considered as being antique pianos even though they may be over hundred years old. Furthermore, antique pianos are also not known to be of very high quality since in those days the art of making pianos was generally not sophisticated and thus there were many defective pieces produced. However if you can really make a good search for quality antique pianos you can surely find them.