Invalid Data Value Anvil

Invalid data value anvils are item forms of the anvil with damage values outside of the usual range which anvils can usually be obtained in.

Obtaining
Without the use of commands, invalid data value anvils are unobtainable in the last versions in which they existed without inheriting them from a prior version in which they were obtainable.

History

 * Inventory appearances (values marked in red are not known to be obtainable in survival mode)

Issues
Invalid data value anvils are an issue, and due to their removal, can be considered already fixed.