Bag of Golding

This small pouch appears to be nothing more than a beautifully decorated bag. But within is an extra dimensional space that can hold 5 square fear of currency. There are four large beads threaded through the string on the front of the bag that are colored copper, silver, gold, and platinum. Sliding these beads to the right causes all currency placed or removed from the bag to convert to the currency stated by the bead. Max of 12 inches opening, any non living non magical item passes through the bag permanently becomes currency. If entered into another extra dimensional space, bag explodes and all contents go flying 300 feet in all directions.