Marvin and interested parties,
Those Mandarina's that you have are rare, only three sets in existence; your's, Art's and mine! aa They are made with the exact same process and components as the Silkworms with the exception of the wire being gold alloy instead of pure 24K gold. These cables are on par with others such as Gabriel Golds, Jade's etc. If there ever was a sleeper these are them.
If anyone is interested Arthurs(as mentioned above) has a set of these Special Edition cables and I'm pretty sure he would be glad to give you his opinion as to their performance. I had the priveledge of meeting Mr. Arthurs this past weekend as well as hearing his system and I wouldn't even know where to begin in saying how impressed I was with what I heard! Let me just say that I am VERY proud to be able to say that his system uses my cables.

Edit: Marvin, you should post a photo of them as they look very different than standard Mandarinas. Just a thought.......
Sincerely,
John