A recent pick up. Based on the box it appears to be an earlier lamp, but not sure how old. On its own it just looked odd to me, so I grab two of my other Aristocrat bases to compare. Base on the left is from a screw top, base on the right is from a later lamp w/bottle cap. Oddball is in the middle.
In all, a taller base, but the proportions are all out of whack compared to what I am accustomed to. As you can see, a much shorter lower cone and much taller upper cone compared to more modern Aristocrats.
A couple more pics follow.