Hi there,I'm very new to this forum and bottles and just recently came across this no embossed bottle that has an open pontil at the bottom. The color appears to look olive green, brown or yellow depending on the angle when holding it to a light. It's also uneven on the neck part. I found the bottle at a flea market. Any help as to how old or if there is any value on the bottle. I would really appreciate any expert opinion. Thanks.