adverting soda pop bottles

I have two really cool advertising "smile" brand soda bottles. They are dated 1922. I am having a problem trying to determine a value. I watched two on ebay over the past two weeks, both identical, one did $700 and the other did $250. I just wanted to know if anyone has an opinion other than to add the two numbers and divide by 2. They are tall, i didnt have a tape measure in my shop, so i put a dollar next to the one in the second picture.