A green circle with beige text written inside is on the top half of the button. A larger circle encompasses the green circle. The top half of this circle is blue and the bottom half is beige. The beige part of this circle contains orange text.
PARISIAN NOVELTY CO., CHICAGO
Green Spot is a non-carbonated orange based soft drink that was developed in the US in 1934. Once popular in the US and sold in bottles that cost 5 cents each, it is now aimed at the Asian market where it remains popular. http://greenspotusa.com/