I hadn't seen it posted before on eBay, but might be. I've been looking for a yellow one in my size and that condition for some time, and paid a hefty toll for it.
Although it also come with a perfect condition Dura Ace seatpost and the original Tange headset, so with free shipping, it cost about as much as a what I've paid in the past for a decent Merckx Corsa Extra.
Have to say that the frame is simply gorgeous, and the condition is a 9.8 out of 10.
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Hard at work in the Secret Underground Laboratory...