Here is a GeForce GTX 1060 6Gb Engineering Sample with factory installed Quadro M5000 cooling system (I've seen those before on a local computer market, but with many broken caps on a back) and Nvidia Quadro FX5800 4GB Engineering sample:
Got those cards from a scrap bucket on ebay together with GTX780 ES, 780Ti 6Gb ES and RTX2060 ES, but other cards are not delivered yet.
Under the hood it's a usual GTX 1060 with a 6Gb of GDDR5 memory, works fine, weights much less than Founders edition. Core configuration is the same like usual GTX 1060 has:
Second card is a Quadro FX5800, it looks the same as usual Quadro FX5800, but this one was made in a U.S.A. It has only one DVI output instead of two on a normal cards, clocks are exactly the same. Works fine, but due to one damaged cap it has only 8x PCI-E lines and because of high temperatures even on a desktop (it was over 75*C) I did not run any 3D tests, need to change paste and thermal pads before doing it.
not for everyday use 
