The tank has no dents or dings. The button does push in. The tank has no cancer to it. I bought out an old bike shop that closed in the early 80's.Auctiva offers Free Image Hosting and Editing. The item "Vintage Schwinn Mens Balloon 26 Bike Tank" is in sale since Saturday, March 24, 2018. This item is in the category "Collectibles\Transportation\Bicycles\Bicycle Parts". The seller is "rusty8857" and is located in North Richland Hills, Texas. This item can be shipped worldwide.