Sacramento, Cal., 40, Aug 24. Circular integral rate postmark (Williams SAC-2490) on 1850 folded letter to Hampden, Maine, with matching arched "Paid" in oval handstamp at left, three page enclosure datelined "North Fork, Aug 11th, 1850", Very Fine, an uncommon usage the arched "Paid" handstamp in conjunction with the integral postmark. Estimate  $400 - 600. $0 (Image)