Waterford Crystal Carafe Decanter

Selling a beautiful Waterford crystal carafe decanter. It's in great condition and would look lovely in any home! This has been used and enjoyed, there is a little residue on inside glass although it's been washed it. I did Google, it says to place denture cleaning tab and water & leave to soak. Will find someone who uses tabs and try. No chips etc. Retail over $400