The product is a vintage NOS nitrous oxide systems 10 lb bottle tank with a hi flo valve, manufactured in the United States. The tank is empty and designed for auto performance parts, specifically for induction systems. With a striking blue color and a performance part designation, this NOS bottle tank is a sought-after item for those looking to enhance their vehicle's power and speed. it doesn’t seem to have any marks of being used with a torch. It looks to be in really good shape. I tried to take pictures of the numbers on there. I don’t know what year it is and it says it’s a 10 pound bottle but I thought they were 20 maybe when they’re full I can’t remember but thank you for looking. Have a great day.