that document you have, if you showed you it to the IRS would result in the IRS denying your worthless claim. The IRS takes the position that if it has any value it is not worthless even though it may become worthless in the future. you can: 1) try contacting the brokerage again to demand they provide documentation as to how they came up with what they did or 2) try searching the web yourself to see if there is documentation about the exchange/reorganization or 3) take your best shot and prepare your return the way you think is correct. you are saying you got a worthless bond to replace another bond that was worthless.
