Mine has the cast iron holder for the nozzle.
Getting back to the cylinders, I saw another American, almost identical to mine and again, blue glass. A few months back I saw one at auction that wasn't for sale and as I recall it had blue glass. Come to think of it many years ago, when I saw my first 8 sided Americans it too had a blue glass cylinder. So in my experiences 100% of them have had blue glass.
I've had a number of blue glass cylinder visibles lately, I use to only get clear glass it seemed like.
I wonder if there was a method with pump companies as to which cylinder they placed in the pumps.
I remember years ago hearing that some companies offered different colored cylinders, not just blue tint. I wonder how many different colors are out there and what was the reason for the coloring?