Are the 24 Kt gold coins superior to the 22 Kt. gold coins?
The 24 Kt. gold coins have 100% of fine gold and the 22 Kt coins have 91.75 of fine gold. However, all of these coins have 1 full oz of gold. That is, they trade for their gold content, which is 1 full oz of gold. So, as a practical matter, the 22 Kt coins have had some alloy added to the coins which makes them a bit more durable.