This is the Mantel of the Order of the Golden Fleece in the Schatzkammer in Vienna.
The formal name for this technique is Or Nue.
I believe this piece was worked in the 15th century.
This tapestry is embroidered using the same techniques.
These figures also feature embellishments with embroidered peals. The shading on the clothing is made from silk couching threads over gold. The face is needle painted.
The level of detail on these figures is amazing. Viewing these tapestries gave me a new perspective on what can be done with the couching technique.