Imperforate Horizontally (324a). Well-centered, deep rich color
It is believed that only one pane of 50 was found in the mid-west. This intact pane was originally in the Worthington collection. After the Worthington sale it was broken into pairs and blocks of four.
Ex Blumenkopf (Siegel Sale 826). With 1997 P.F. certificate. Power Search shows very few of these rarities — apart from this one, last offered in 2000, the next we find was in the 1990 Rarities sale