In the 1800's, there were certain bottled products that  enjoyed a massive chunk of the market share. For liniments it was Johnson's American Anodyne,  shoe blacking (polish) there was Whittemore's French Gloss, for kidney "cures" there was Dr. Kilmer's Swamp-Root, and for sarsaparillas there was Hood's, root beer extracts, there's Hires. Now when you find a single bottled product at that time, that was ruling the market, you find a LOT of other bottles, containing the exact same type of contents, in the SAME size and SHAPE bottle. Many times the labels were the same color scheme and set up, as were the graphics on the original boxes. Many bottled products in the 1800's came in boxes, as glass was expensive, and bottles failed regularly due to poor manufacturing and lack of quality control. Anyhow, this uniformity was an underhanded attempt to gain accidental sales, by a population that was semi-literate, at best. Probably worked on a lot of Speed-Shoppers too. Diggers call the bottles that look like the common ones, but have different embossing copycats. This is not to be confused with counterfeit bottles though. With counterfeit bottles, it was unethical glasshouses who would knowingly use proprietary molds, or real close copies, without the knowledge of the actual proprietor, and sell them to crooked pharmacies, apothecaries and other vendors, who would fill them, label them like the originals, and sell them at the premium prices commanded by the originals, and make a mountain of profit. A great early example of modern corporate thinking. Perhaps one of the best known counterfeit bottles is the Turlington's Balsam of Life, the little guitar shaped bottles, that usually proudly proclaim being granted a patent by a king.... Thanks for your attention, Rob.