Lone Pine gardens? This came from a landscape nursery? I'll take 2, please.
Yep, Lone Pine is a great source for bonsai. They're a bonsai propagator. This chojubai apparently used to be their stock plant from which they would take cuttings. Why they decided to dig it and sell it is beyond me, but when I saw it, I recognized this was a rare opportunity.
By the way, this is how I tend to shop for bonsai. I go to Bonsai shops or bonsai shows and buy the best material of what's available. I didn't go in there looking for a chojubai. I'm a pine guy. But, sometimes Opportunity knocks!