Hi Gunther, My husband and I own Dr Isaac J. Martin's residence and pharmacy in Ellicott City. It's exciting to see a photo of the bottle you have! We have one that was found in the wall here and has a partial label you can read. Our bottle does not have the doctor's name pressed into the glass like yours. Would you be interested in selling it? If so, we will include a free tour of his pharmacy, haha :0) I see you are in Frederick, that's not too far from us.