Several pairs of Virgil Abloh's Off-White collab with Nike are hitting the auction block ... but they're even more rare than usual -- they're actually signed by the late fashion icon.
TMZ Sports has learned ... one pair included in Sotheby's Modern Collectibles catalog is the Air Jordan 1 x OFF-WHITE "UNC" ... which features the famous "Off-White For Nike" label and red zip tie.
These blue and white sneakers are also signed by the fashion icon -- reading "Virgil 2018" on one shoe and "HODEI" (which means cloud) on the other.