Little doubt that that's what it is, and it seems to be in good shape as well. Those basses weren't all that common compared with all the other Kay basses, and they're getting rarer as time goes by.
If you're thinking of buying it, good on ya. If you're definitely not considering it, maybe you'd like to pass along details to interested west coast TBers??
Of course, you might be thinking of buying it, then thinking of not buying it, then thinking of buying it...
Nice find, and I hope they don't want too much for it.