To the untrained eye, the old cello donated to Goodwill Industriesl looks inconspicuous — no different than the dozens of other string instruments sold by the non-profit social enterprise each week. A note on the auction page says the instrument is in “used condition with a number of significant cracks” and “many scratches.” A string is missing. So is the bridge, a piece of carved wood that supports the strings and carries its vibrations to the cello’s body. As for the bow, it, too, has seen better days. The cello is likely more than a century old. The bow, by contrast, has a stamp noting that it was made at the internationally-renowned Vidoudez firm in Geneva, Switzerland. Yet, someone, somewhere, saw beyond the appearance and recognized its inner worth. May they play sweet music on it.