This custom OME Eclipse has a 12" rim instead of the 11" rim typically found on this model, offering a slightly warmer, deeper tone.
In addition, this Eclipse has been customized with a Silverspun tone ring instead of the usual Vintage ring.
The Silverspun ring is a substantially heavier ring, which should give this Eclipse more brightness, volume, and sustain.
Here's what OME says about their Silverspun ring:
THE OME SILVERSPUN tone ring is made on a spinning lathe similar to a cymbal or horn. It is machine fitted to the wood rim and also incorporates an inner steel ring, which adds to its performance.
This tone ring has been used on most of our Tenor, Plectrum, and upper end 5-string open-back banjos for over 45 years and gives exceptional treble, midrange, and bass response throughout the entire playing range.
You can read more about OME tone rings on this page at OMEBanjos.com.