Lot 3172 o
1914, 50¢ violet, S.L. watermark, perf 12, unobtrusive oval cancel, large evenly balanced margins and virtually perfect centering, rich bold color on bright paper, Superb, rarely encountered in such exceptional condition, with only 2 graded higher; with 2013 P.S.E. certificate Graded (Superb 98, SMQ $950).Scott Nos. 421 $28.