I am a big fan of lockbacks. Here are a few of mine, all in stainless.
GECs in 440C (99s in chestnut, bone, and elk and a 42 in micarta):
View attachment 1341528
Fontenille-Patauds in 14C28N (buffalo horn, maple burl, and phosphorescent resin):
View attachment 1341530
Moki in VG10 (bone):
View attachment 1341531
And my favorite, a Camillus/Santa Fe Stoneworks in mother-of-pearl, lapis, silver and nickel silver. I am not sure of the steel in this one, but it is definitely stainless. My father bought this for me when traveling through Santa Fe in the early '90s. I carried it for decades, until I realized Dad wasn't getting any younger and I should keep it safe and sound. The search for a replacement is actually what led me here.
View attachment 1341534