Okay.. so i am researching these bottles that marked " tcw co" One is marked with Bullets "T.c.w. co." the other is not, just "t c w co" i am having a slightly hard time pinning down a date for these...i know they are made by the Wheaton glass company Founded in 1888 by Dr. Theodore Corson Wheaton, i also know they have a glass museum.. however other than that, i haven't been able to find much information on how to pin them down to a date.