Aces are still undervalued! True. Just look at what is going on in the quality classic world around us eg Aston's, Ferraris, MB, etc. I remember visiting a Ferrari dealer on my sons 21st birthday 6 years ago( not to buy I hasten to add!). There were 2 288 GTO's, amongst others,there at the time for a bit under £250k ea. They are now £1m + and even towards £1.5m. DB5's 6 years ago perhaps £200k? Now £500k
More directly, Aces have for as long as I can remember been about half that of Cobras. Not now, the gap has widened to nearer 3x.
Check out this site, put in whatever make/ model you want and it will give all the auction results, interesting stuff.
http://www.conceptcarz.com/vehicle/default.aspx?carID=9303&i=8