What a beautiful bowl this is. Introduced by George Duncan's Son & Co. in 1896-97, collectors commonly call it Scalloped Six Point, but it was called No. 30 by the company. This is a fairly easy-to-find pattern in flip-top bowls, but the difference in quality among them is notable. Most don't have the thickness of glass and depth of pattern that this beauty has.
It is a substantial size, at 5 5/8 inches in diameter and 3 1/2 inches high, not including the knob. The brass lid shows the usual bumps and scratches from use, but in a curious, muted way. If you look at the photo of the lid's underside you'll see that it looks like it was at one time either chrome or nickel silver plated, with the majority of the chrome worn off. But the top and rim look like solid brass with a uniform sheen. So my questions are: Has the plating worn completely off the lid and was it cleaned and sealed, and was it possibly even painted a brass color? I honestly can't tell, but it is quite beautiful as it is. I would definitely use it as I would any flip but would handwash it rather than putting it in the dishwasher.
The glass base is rich and shiny. I see only a few scratches in the bottom from use. Sadly, though, there is a chip in the foot. It's not that easy to see and would never been seen when in use, but it is certainly there. Therefore, price is consistent with flaws.