That's a great find! Not one I've seen before that I can remember. Is that the same Humphrey who had all those little homeopathic bottles? I don't remember seeing any non-homeopathic bottles from him.
Speaking of blue bottles.
Here's a little blue 1.5" bottle I found exposed by the wind at the base of Naushon island Lighthouse which was built in 1891. A pretty desolate place: the island chain is owned by the Forbes family.