Heroin and other opiates are stored in dark containers for stability. And turn of the 20th century mail order was powder. In brown glass jars or bottles. There was a doctor's office on our property from before the War of Northern Aggression to sometime in the 1890s. We've dug up plenty of old drug vials here to see how products were packaged.

Brown glass with a rubber lined metal cap. Have dug up opiate vials, arsenic and strychnine compounds, brass syringes, etc.