too bad they were a) rediculous expensive and are b) sold out. not only is this level of geekery super right up my spigot, but its like a veritable treasure trove of typo-answers!
ie, the negative bit in an 0,b, or any other confining shaped letter or number is called a counter. so, ive always asked, whats the dot above and i or a j called? according to this poster, its called a tittle.
learn more here.