Here we have a vintage Girl Scout badge called Pen Pal used in the Junior program from the Fall of 1963 to the Spring of 1980.
During that time period, 6 distinctive versions badges were produced:
(There were a few other types that are not as common, but I will not be including those in this listing)
1963-1970: Light green material, CHEESECLOTH backing
1963-1970: Light green material, BUCKRAM backing
1970-1974: Light green material, PLASTIC backing
1970-1974: Light green material, BRIGHT GREEN BORDER, plastic backing
1974-1977: PIN STRIPE material, plastic backing
1977-1980: VIVID GREEN TWILL material, plastic backing
At the very top of this listing, click the drop down box or click on the individual pictures to see which of these 6 variations I currently have available of this Pen Pal badge.