I think those dates would be more accurate, I hope Bob would reply in here if he reads it but he has not been on here much, I remember Bob & I & Others trying to find the first Vernors Crown Top supposably made around 1897, don't think we ever found a example. I'm not sure Bob could pin point any early (1890's) crown top to it's exact date to the year. Many Bottles were made the same for many years with out any changes. LEON.