Blue Swirl Tiffany Style Perfume Bottle

This bottle is very beautiful and caught my eye the other day while browsing a local consignment shop. I picked it up and saw under the price sticker that it was signed L. C. Tiffany, I did some research and found out more about his work. I have a feeling this is not authentic only because it was so inexpensive and what are the odds an authentic peice would be on consignment. I just really like the pattern and deep blue color and swirls. It has a pinched look with tiny air bubbles and the base has fluted scroll like "legs". It is fairly heavy and the stopper is long and thin with some wearing near the ball of the stopper. I would love to learn more about where it came from and its possible value ( if any.) I am posting pictures to see if anyone knows more about the piece.