Series II ran from the 2008 Mouse to the 2019 Pig and is the chapter most collectors build sets in. It introduced the full fractional range — 1/20 oz, 1/10 oz, 1/4 oz, 1/2 oz, 1 oz, 2 oz and 10 oz — which made a complete twelve-animal cycle achievable at more than one price point, and it is the reason the series became a mainstream collecting program rather than a specialist one.

The redesigned reverses are the other reason. Each year's animal was given a full-relief treatment rather than the flatter Series I style, and the colorized and gilt variants that appeared through the middle years of the run are now among the harder pieces to locate in MS 70.

Everything on this page is certified and listed with its grade and certification number. Where a coin carries a First Strike or Early Release designation from the grading service, that appears in the title.