Originally Posted by Elgaucho:
If there's no markings on it... my guess would be Bing.
Bing almost always marked their products. If made by Bing, there will almost certainly be the "GB" or "BW" logo on it somewhere. There is the very rare exception, but as a general quick rule of thumb, if it's not marked, it's probably not Bing.
Didn't see the auction. What else of interest sold?