51 JimR56 8 months ago I can tell you I bought my ES-350/ES5 prototype from Gruhn's in '91 for $1400. Even then, a very decent price for that gem!I traded for a (minty, flamey) '53 ES5 at a shop in SF, circa 1985. I traded two guitars, a c-melody sax, and a bit of cash. I think their asking price was around $1,300. Ended up trading the ES5 for an equally clean '51 350 plus a Gibson tweed amp. The 350 became part of a trade too, for something that I also traded away (seriously). Now my head is spinning.