<p>If I have an image like the one attached, what’s the best way to create an accurate depth map of it? I have photoshop CC and 3ds Max, but I don’t know what settings work best with Slic3r. There is a plethora of settings and combinations to choose from in either programs. </p>

<p>Did anyone do this before? If so, can you share your technique?</p>

<p><img src="https://i.stack.imgur.com/9wbEP.jpg" alt="enter image description here"></p>

From a single image from this perspective (front view) you cannot map the coin surface in detail. There is reported limited success in estimating the depth of single images, but, this is for images with a clear perspective (e.g. like a picture of a room showing the walls and floor at an angle). In order to map the surface you will need to have multiple images and preferably know the direction of lighting on that object.
People with one eye cannot estimate depth very well, you need two eyes and a trained brain to understand the differences in depth.