antique 2 inch diameter solid brass tubing, total about 31 feet

antique 2 inch diameter solid brass tubing, total about 31 feet, was used in the historic Hudson's Bay building in downtown Detroit, have approximately 31 feet total length, many uses like home décor. I was told over 30 years ago that these were the tubes used to send cash/receipts pneumatically throughout the store. Last use was in Windsor as bar hand railing at Luckys Roadhouse. Located in Lakeshore. Selling whole only.