Salina, Col., April 5th, 1875, manuscript postmark on 1874, 3¢ green entire to Hillsboro, O.; sealed cover tear at top well away from postmark, otherwise Very Fine, this is the only known territorial postmark from Salina, ex Jarrett. Estimate  $200 - 300. The principle mining camps in Boulder county were Salina, Left Hand (Gold Hill), Ward District and Sunshine. $0 (Image)