My husband has been collecting bottles for quite some time. He actually found this one in our back yard! Imagine his suprise, after all of his diving and digging over hill and dale. Found in central New Hanover County, NC. House was built in 1948. There is the number 4 embossed on the bottom. The glass appears black, with a definite amber glow seen through the light. The bottle is 5 cm tall and and just short of 2 cm at the square base. Thanks so much.