Most likely VSL and about 100 years old, dating to late 19th or early 20th. Has a small 1/4" chip to the blue overlay in a spot as photographed and otherwise is excellent overall condition. A nice piece to use if you wish.....very slight residue inside which should clear off. I have considerably reduced the price of this in consideration. A fantastic display piece for use. Why spend 600 when you can get one for a fraction. Very large and heavy at 12 1/4" and about 4 1/8" diameter at its widest.