If we had an inside on under the radar deals or finds, we wouldn't be sharing it here! Joking aside, I think the market has changed quite a bit in the last few years. Vintage watches are certainly hot right now, and good examples are getting snatched up as they are more find-able by the uninitiated than ever before with so much information readily available on the forums and websites. Dealers are also capitalizing on this as there seems to be a great market of people with the money that don't want to take the time do the the research or the hunting, and are willing to pay the dealer premium.
Fratello posted an article today that speaks well to this point, http://www.fratellowatches.com/the-vintage-market-summer-2015-the-chronographs/
-ct