I need help in identifying the impossible. I have a small what appears to be a soda light green unmarked bottle except for an embossed “ 10” on the heel which I think is possibly a run or mold number ? The bottle is 5-3/4 “ high and 1-1/2 “ across the base. I think it is about a 2 or 3 ounce size ? It has bubbles so I think it would be an older vintage . Possibly a sample ? Mini soda ?