Unreal! SOLD that fast, still shocked!
It is a nice bike in a nice color. There are lots of old bikes around, but that higher-end supply of very good originals and high-quality restoration bikes is actually fairly small. There's a segment of the market, often with a lot of disposable income, that will only buy in that rarer category of condition. If the bike hits one of those buyers just right, it will sell quickly at a solid price for the seller.
The few higher-end bikes that were very good originals or high-quality restorations I've sold attracted a different kind of buyer than the run-of-the-mill and well-worn bikes I've sold. The higher-end ones generally sold at full asking price, to buyers who showed up, asked good questions, and paid in full. The run-of-the-mill and more worn bikes I have sold over the years often drew 3 flakes/low-ballers/etc. for every one real buyer.