HALLMARK: Valentine's Hippo and Airplanes Stickers

1 sheet of Valentine's Day stickers with pink background with comical animals including hippo in hot air balloon, bear in airplane and red hearts by Hallmark. 

Highly collectible rare VINTAGE Hallmark stickers from the 1970's, 1980's, or 1990's.  Limited stock quantity due to 40+ years old.  Stickers are in good condition considering age.  Each sheet is 4 3/4" x 6".  The stock quantity is very limited on these highly collectible stickers.