What is the value of a 1967 Australian 20 cent coin 1978 coin 20?

The value of a 1967 Australian 20 cent coin can vary based on its condition and market demand, typically ranging from a few dollars to around $15 for uncirculated examples. The 1978 Australian 20 cent coin generally holds less value, often around $1 to $5, depending on its condition. For precise valuations, it's best to consult a coin dealer or use a reputable coin price guide.