Up for sale is a Power Steering horn button for your 58 Thunderbird. These will also fit a 59 or 60 though the insert color would not be correct.
This horn button is useable as-is though does have some pitting and there are some minor scratches on the plastic in the center.
$25 + shipping
This horn button is useable as-is though does have some pitting and there are some minor scratches on the plastic in the center.
$25 + shipping