The Roaring '20s and the economic boom times associated with most of the decade brought higher mintages for the Lincoln cent series. This means many Lincoln cent issues from the 1920s are comparatively more common than their predecessors from the teens. As for the 1920 Philadelphia issue, it is a common coin in all circulated grades and right through MS65. Higher-graded examples are considerably tougher, with MS66s scarce and MS67s nearly elusive.