1c Panama-Pacific, Perf 10 (401). Mint N.H., rich color on bright white paper, outstanding centering with Jumbo margins, Extremely Fine Gem, with 1997 P.F. and 2015 P.S.E. certificates (XF-Superb 95; SMQ $325.00), this is underpriced in SMQ as 95's routinely realize well above this value