This one turned up at the Ohio Show - I can’t remember who had it:
It’s an Edison with a wonderful imprint:
This one appears to have the lines of an early Rex product, which I would expect, since I’ve found an Edison from the “four horsemen” family of Rex pencils - see http://leadheadpencils.blogspot.com/2015/01/two-out-of-four-horsemen-aint-bad.html). It also has a mysterious portal on the side of the barrel:
It’s similar to the one found near the bottom of the barrel of an Artcraft I wrote about some time ago – also from the Rex family (that article was posted at http://leadheadpencils.blogspot.com/2013/07/rex-redux.html):
On the cap of the Edison, there’s what I believe is a model number assigned by Rex itself:
“20ER.” Suppose this was a Rex model 20, made for Edison (E), in a ringtop (R)?