With the research that I’ve done, I believe this has a fire polished straight finish with a cup base. The glass does have some air bubbles in it, but seem too large to be air venting. It’s about a foot tall, base diameter is 3 inches and neck is about 1″ in diameter. Anyone has any idea how old this might be or what it might be worth? It was found in the woods when my husband was fishing. Thanks for you help.