Yep, it seems that you have indeed purchased one Series pickup and one hum cancelling coil. It's unusual that somebody would be selling only those two items, I kind of can't imagine how that came about. Does the pickup have the same lead and connector? Can't see it in the picture.
You almost have the makings of a "Series .5" but as Mica points out these pieces are designed to work with the entire Series instrument electronics package so it would take some major doing, and some serious cash, to build something around these pieces.
On the other hand, there may be folks here in the forum who would be interested in buying these from you, if you want to go another direction.
Jimmy J