A simple nobel prize medal I created with https://makerworld.com/en/makerlab/reliefSculptureMakerV2?from=makerlab

It is far from perfect, but overall I am happy with it and thought, meh, why not share it. The letters could definitely be better. Depending on your printer and goals, I highly recommend playing around with 

• Nozzle size 
• Layer height 
• Manipulation the z Axis scale in your slicer

In the pic i used 0.4mm nozzle (0.2 would def be better), 0.15mm layer height and increased the z scale a bit.