This bottle looks English and would date 1870 - 1880This the only such bottle I've found in Florida. I've always thought of it as American-made. Rex Wilson (BOTTLES ON THE WESTERN FRONTIER) illustrates a number of "beer bottles, export style" which are close. These would be for 1870s lager beer. I'm eager to see your Texas finds, nhpharm, especially any with the raised ring around the mold vent nipple.