Although more than one of these pin cushions must have made, we've been unable to find any other examples. The material is jet (which makes sense, as Scranton was a big coal producing area). When rubbed, the piece becomes electrically charged. The jet has been lathe turned, with most parts polished, but two of the grooves left unpolished. I have not been able to find another example of this pin cushion.
On the top ring the words: SCRANTON PA. We date this piece c.1900.
Please note: genuine jet is made from bituminous coal. Because the Scranton area produced anthracite coal, this piece may be "imitation jet". But it might take a geologist or gemologist to discern the difference.
The base diameter is 2-3/4", the height to the top of the turned jet is 1-3/4", and then the red fabric pin cushion sits on top of that. Condition is very good.There are 3 small chips and a few scratches at the back of the jet holder, and a slight nick under the "N" of Scranton. These are shown in a photo below.