If you have enough to show one of the two serial numbers of the note, you can get a 50% replacement. If you have BOTH serial numbers (complete!) then you can get the full value. If you have only a partial serial number, sorry, Charlie, you’re out of luck.
What to do if you lose a half dollar bill?
You can use your cash as is if a corner is missing. If it’s ripped into two pieces, tape them back together and take the bill to a bank, where they will make sure the serial numbers on both sides of the note match and give you a new one. As long as three-quarters of a bill are intact, you can exchange it for a whole bill.
Where do I Send my damaged US currency?
Damaged, or “mutilated” currency may be mailed or personally delivered to the Bureau of Engraving and Printing. When mutilated currency is submitted, a letter should be included stating the estimated value of the currency and an explanation of how the currency became mutilated.