This one looks to have a number "4" in the wire groove, it's kind of faint. A little nick off the side of the lower wire groove, two open drip points and a light flake to one drip point, hard to even see. I heard that was made the amber swirls was the glass was mixed with brown glass to make Anheuser-Busch beer bottles. It's hard to capture this color, trust me the insulator looks better in person, more yellowish/greenish. There are a lot of neat little bubbles to in the glass. Books 125-150, would like to get $90 plus shipping. I can do trades.