Liberty head Double eagle
due less desirable artwork , therefore lower demand, liberty coronet $20 gold pieces less encountered, , common subtype commands less st.-gaudens type. in 1866, motto in god trust added liberty coronet double eagle, creating second subtype. in 1877, coin s denomination design on reverse changed twenty d twenty dollars creating third , final subtype series. 1879 pattern coin made quintuple stella using design combining features of liberty head double eagle , stella pattern coin , using same alloy stella (90 parts gold, 3 parts silver, , 7 parts copper). coin stolen in july 2008.