Can anyone tell me what I've got?

This is a beautiful perfume bottle I found at a yard sale and I'm not sure what it is. The woman was older and she said she couldn't hang on to her treasures forever so she was selling them. I bought it for $1 I can't find one that exactly matches it... I believe it's hobnail glass... but other than that I'm helpless. It is approx. 4" tall from tip of flower to bottom and 2 1/2" wide. Any and all info is appreciated.