Rust happens. My new KSF custom bowie of 50-100B already has some minor rust spots. I stored it in its sheath without applying my usual Tuf Cloth protectant. But it sure cuts well. For those who just can't stand stains or minor rust spots, I suggest going with stainless steel. 420J2 knives make great safe queens and display knives, and they are cheap. For those of us who actually use our knives, a little surface rust or discoloration just isn't a big deal.