"I had 'em around and always wanted to put 'em on a bass, figured this bass would be the one."
Admit it, you pulled those knobs off your Easy Bake oven, didn't you?
There was a British guy selling a lefty '77 Fender Mustang bass in natural finish on Arni's site a couple of months ago. He was asking 900 pounds + shipping but was entertaining reasonable offers. I don't know if it sold or not, but it's still listed. That's about $1400 US with shipping I'm guessing, or less if he accepts a lower offer. I have no idea what the market value of a real Mustang bass is though.