As part of a large consignment of telescope gear that was recently donated to EAS, there was a very small set of eyepieces--most of them less-usual types. Among them were a (suspected) Paul Rini 15mm, a 30mm 80-degree AFOV eyepiece that looks suspiciously like an old University Optics eyepiece, and the following Edmund 32mm Erfle.
I'm curious about this one; it's got an unpainted barrel that has been pretty tarnished, and the only one I've seen (online) that was similar had a black barrel. Is this one of the military Erfles? Does anyone have any idea of its vintage and/or value? Although the barrel is nicked and tarnished, the glass looks pretty darn good given that it was stored in an attic uncovered for quite some time.