Patina on three old users in my collection: A Case 6.5375 large Stockman (left), an old Robeson aluminum-scaled Stockman (bottom right), and an Ulster Scout knife that my father-in-law carried for several decades.
I love the patine that old U.S. Schrade 1095 steel takes on after a little use.
Several old U.S. Schrades in my collection - all were bought used and had some level of damage to the blades. I usually convert them to Sheepfoot style.
Two U.S. Schrade #77OT 'Improved Muskrat' patterns. The one on the right is new, the left one had a broken blade tip and a bent tip on the other, so both were converted to Wharncliffe/Sheepfoot styles.