Antique milk pitcher

If my memory serves me correct, this was some sort of Kix cereal giveaway. I dont know if it was physically in the box or you had to collect stamps and send them in. I know it came in this blue, yellow, green and an orange red colour. I finally completed my "set" and this is now an extra / duplicate i would trade away. For somthing equally as awesome like fireking or pyrex or hazel atlas milk glass with fired on colours.