VERY FINE AND CHOICE. A RARE STRIP OF FOUR OF THE ONE-CENT 1908 HORIZONTAL COIL, SCOTT 318.
There are probably fewer than six strips of four in existence, which are the largest recorded multiples. Most have been broken to feed collector demand for pairs and singles. The two examples listed in Power Search have a narrower top margin.
With 2017 P.S.E. certificate. Scott Retail as two pairs