The carbon bubble straigt up from the slug embossed No9 on rear skirt can't be missed. You will have to look a little closer to see there is a little more carbon mixed with milk in both dome and one side of skirt. The condition could be worse. Has a chip on both sides under mushroom dome. On one side there is also a small clean nibble (both chip and nibble visible in pic posted). Still a pretty cool insulator. A great example of a carbon bubble if you don't have any in your collection. $30 shipped anywhere in USA. Add $7.50 to Canada. Pay Pal non-fee prefered but I wil accept any paper payments except for person hand written I owe you's. First email wil have insulator 2-3 days once payment is received. Thanks for looking.