Hey all, yes, my first post. I've always liked bottles and buy one here and there. I was at the Hillsville, VA annual flea market a couple weeks ago and being a laboratory manager I was attracted to this sulphuric acid bottle with raised etched lettering on the face of the jar saying "ACID SULPHURIC H2SO4". I picked it up and looked at the bottom and saw the patent date of 1879 and decided I'd better pick this one. Generally, besides missing the ground glass stopper, it is excellent condition with a few small air bubbles. Upon further inspection, the bottom has the following info reading from top top to bottom "PHILA", "PAT MAR 15 1879", "F", "USA" and "NEW YORK". See pics attached. I've read "The Dating Game" articles, but no description that matches this is discussed nor is the markings on the bottom very similar to this one. Can anyone tell me more about this bottle, got one like it, possible historical importance and value? Thanks for your help.