I found a buried bottle that appears to be a corked style, brown bottle made by the Gerresheimer Glas Co. The trademark on the bottom is the "G under crown" stamp. The other markings include DIN with a line above and below listed first, 0,7L just below that and then below that is the trademark. Written sideways on left side of the bottle is 18:13 and on the right side of the bottle, also sideways is the number 5.
I attempted to search the value and get more information however, the only reference I can find was the trademark symbol dating back to 1939 - ? and all else was company direct documents written in German. Needless to say, I don't speak German unfortunately.
I cannot find a single example of any other bottles that are this size bearing this symbol on any site at all. The only current references I can find about this glassware company is pharma glassware made in the US, which this bottle (appearing to be a wine bottle). Anyone out there that knows anything about my find, I would love to know as my curiosity is pretty high now!!! Any info or links would be greatly appreciated!! Thank you!!