The chart on the left (top on mobile) is a case study of a snapshot in time from 2010 to 2016. Over this time period, the price of gold started to rise, causing the value of both bullion and Investment Grade Coins to increase. When the price of commodity gold started to cool, the market for Investment Grade Coins improved even more, driving up the price of Gold American Eagle Proof 70 coin sets. The chart on the right (bottom on mobile) shows the price performance of the most recent Gold Eagle Sets, which are not included in the chart on the left (top on mobile). This data suggests a strong market for Investment Grade Coins and could signal the beginning of another boom cycle.