David Sosa "artifacts" and historical items

David contributed much more than groundbreaking das riser designs. He also made a lot of other cool stuff. I would like to start this thread as a tribute to his lesser known and unique archery products.
Here is my first contribution: Hoyt gamemaster ilf conversion buttons with fibre reinforced rubber silencing limb pads. Blew my mind when I randomly got these! Wish I had a gamemaster.