This was banned by the USBC in 2016 after determining that the balls didn't comply with specifications and requirements outlined in their manual. Unapproved balls may not be used in USBC certified competitions. Please keep this in mind when bidding. I purchased this ball from the estate of an avid collector of bowling balls and do not have history about it beyond that this ball was purchased several years ago and stored. This was stored in a bowling room within the climate controlled house. Please note that there are a few scratch marks as pointed out in the photographs. Box has wear. There is a CG hole and Mass Bias mark as photographed. Please let me know if you would like to see additional photos. Please understand that although this ball has not been drilled, it is a discontinued/banned ball (back in 2016). I am happy to answer any questions that I can. This is tagged a 15pd 1oz ball but as shown on scale it weighs closer to 14 lb 15 oz. Box has some wear/writing Please let me know if you would like to see additional photos. Please understand that although this ball has not been drilled, it is a discontinued/banned ball (back in 2016). I am happy to answer any questions that I can. Overall, a rare find! IIt is a powerhouse with a massive hook!