20c Carmine Rose, Horizontal Pair, Imperforate Vertically (567a). Mint N.H., deep rich color, trace of guideline at right, usual light natural gum crease not mentioned on accompanying certificate
According to Gary Griffith, a complete pane of 100 was found in Pasadena Cal. in 1929, which was divided between two collectors. This would make 50 pairs total. At least one of the panes was broken into pairs and blocks. The example offered here is especially desirable as it is Mint N.H..
With 2001 P.F. certificate