I might suggest looking through city directories for Denver to see if you can dig up any listings for this business.
If the mold seam goes all the way to the top edge of the lip, then it is machine made and suggests a date after about 1920. If the mold seam stops at the ring at the base of the lip treatment, then the bottle is likely from the first or second decade of the 20th c.
There seems to be better data on hard liquor businesses (eg. pre-pro.com) than beer and wine. Note that this business was just a bottler, not a manufacturer so it could have been a small operation.