Sutures. (Patreon)

It wasn't uncommon during visits with Jack Yount to find him with something freshly sutured; his frequent trips to visit Dr. Brown's clinic in Mexico often had him returning bruised, sutured, and sore. 

When he had to have a small melanoma removed from his chest, he made sure that the wound was documented just like every other alteration to his body. This would have likely been somewhere around 1993 or so.