Just got it. A couple things I notice immediately:
1. it's larger and heavier than most, with a 12.25"/31cm circumference (about as big around as a softball) and weighing in at 2 lbs 2 oz.
2. it's clearer than most, both in glass color and in that there are very few bubbles
3. there's a "done-while-hot-looking" small dent at the very top (is the weight transferred to another rod to impress the pontil stamp?), and
4. the base isn't even, as if it wasn't set down evenly in the annealing oven.
The last two items, the seller "forgot" to mention in his listing, but they bring up another question: are seconds normally signed at all and, if so, do they tend to be signed or marked differently? I ask because this weight looks very similar to the two on
this page by
Bob &
Maude St Clair.
I struck out on "Bobby (and Bob and Robert) Montgomery"... can't find anything whatsoever about him. Closest is that a Bob Montgomery was a pallbearer for a guy who worked at Corning!

Still looking to re-find the similar one I saw the other day...