Thanks for posting.
Correct - D 191 is the Distiller Permit #
1939 - Not sure - Bill Lockhart has done quite a bit of research on dating bottles based on manufacturer marks. https://sha.org/bottle
FEDERAL LAW FORBIDS - see my webpage - https://www.antiquebottles-glass.com/learn/federal-law-forbids-sale-or-reuse-of-this-bottle/
Tracking down the company associated with #191 is work. I have done this for a number of companies through the simple process of scanning eBay for labeled bottles with the FEDERAL LAW FORBIDS embossing. Sometimes sellers will list the base embossing which helps a lot.
