While my oldest pair of Alden shell cords have only seven, plus years of use on them (and they do look great); my oldest pair of shell cords are a pair of AE Leeds, in #8 shell, that have been in my shoe rotation for the past 26 years...numerous resolings, a full re-crafting and the still look great! Shell cordovan foot gear is made to last!
26 years! That's great! Can you post pics?