1924 NGC MS63 G$20 Rainbow Toned Saint -- Rainbow toned gold is very rare and occurs when the alloy is not thoroughly mixed and copper and other trace metals are deposited near the surface. I have seen less than a handful of other examples, and most show the same characteristic patina. The coin also has a couple inconspicuous copper spots at the eagle's tail, which do not detract from the eye appeal and are a testament to the coin's originality. This represents a very rare opportunity to own affordable true rainbow toned gold. $2699
