No info here, but you should fill it up with room temp water then pour the contents into a large measuring cup to determine rough volume.
I wonder if it was it intentionally sold as a 1/6th gallon, or were they cheapskates trying to sell it as a quart or 1/5th, thus digging the grave of the company and inadvertently making it so rare nowadays?
Great bottle, but since I see your multicolored flask as the #1 bottle in the upcoming Glass Discoveries auction preview I am sure that you have handled far better. 11,000 or 11,200 or something you got for that less-than-10-dollar 2nd hand shop bottle a while back, right? Wonder what it will bring in this economy? Or am I confusing you with someone else??
Regardless; great find and best of luck figuring out the historical particulars.
It is a 6th. I found the company was listed in 1875 as a Grocer and importer. There are very few applied top southern whiskies. I also saw Klingensmith has the flask in his auction. I hope it does well. The whiskey was a ebay purchase and not cheap. The opening bid was alittle steep but no one bid on it due to the poor description.