The Helmar Stamps issue included at least 181 different stamps, each issued in a glassine envelope.  Particularly difficult to find today, when the stamps are found, there are typically considerable condition flaws due to their lightweight paper stock and small size.  This example features a colorful design, surrounding a black and white photo of the popular pitcher.  Graded FAIR 1.5, the stamp does have a slight clip at the upper-left corner, along with evidence of adhesive staining on the reverse.  The image quality, however, is quite strong for the grade.