What is this 3d design of Bitcoin? Lots of places online have a ray-traced, photorealistic image of an elaborate Bitcoin mint of the same design:
https://www.insiderfinancial.com/wp-content/uploads/2016/06/Two-Bitcoins.png

What is that design? where can i get a 3D model of it or a heightmap image of it?
I don't think that's a rendering. I think that's an actual copper coin with a bitcoin/circuitry theme. 

Googling the text on the back, "AOCS APPROVED MJB 2013," finds this site, which gives the designer's name, Mick Bruce. Presumably "MJB" is his initials.

Googling that turns up this thread on BitcoinTalk, which is pretty similar to your coin.

I can't turn up a 3d model, but the designer, Mick Bruce, might have it. You might be able to contact him via the email in this thread, or by this onename.