The useless TM28 in the items pack.
The useless TM28 (hex:DC) is a glitch item in Pokémon Gold, Silver and Crystal. It belongs to the items pocket and is a useless copy of the actual TM28. It sells at a Poké Mart for 19660 Pokédollars.
The description of this glitch item is "1st turn: Burrow 2nd turn: Attack"; the same as the real TM28 (Dig).