All three versions of the Blackwing: the original Blackwing 602, CalCedar’s Palomino Blackwing (pointing right), and the new Palomino Blackwing 602 (with black erasers) FORTUNE — Passions were running at their usual near-fever pitch in the pencil world earlier this year. CollectingPencils.com wanted its readers to identify the pencil held by GM (GM, Fortune 500) …