The main factor is rarity, which is measured on a scale from 1 to 10 (1 being the most common type). In 1862, increasing to a flood in 1863, tens of millions of dollars of these tokens were circulated. if(MSFPhover) { MSFPnav2n=MSFPpreload("_derived/patriotics.htm_cmp_copy-of-blank010_hbtn.gif"); MSFPnav2h=MSFPpreload("_derived/patriotics.htm_cmp_copy-of-blank010_hbtn_a.gif"); } http://home.comcast.net/~bluitje104189mi/ Analytical cookies are used to understand how visitors interact with the website. The first of these privately minted tokens appeared in the autumn of 1862, by H. A. Ratterman, in Cincinnati, Ohio. listed as Zinc). // -->