Dug another nice old marble and I believe its another Peltier Rainbo. Cheese, how were these sold back in the day? Did they come in a bag of 5 or 7 or 10?
You are right. They came in several types of packaging. Peltier sold them in boxes, bags of 40 and 19 marked "Champion Jr", and larger bags. Other companies put them in bags for promotions like free with purchase of shoes at Buster brown or maybe hanging on a drink bottle in a 6 pack of lemon lime soda or in a box of cracker jacks.