Which Hermès bags go up in value?

I'm curious, which Hermès bags have the potential to appreciate in value over time? Are there certain models or designs that are particularly sought after by collectors, driving up their market price? Is it simply the exclusivity and craftsmanship of Hermès bags that contribute to their potential for appreciation, or are there other factors at play? I'm eager to learn more about how to identify Hermès bags that may increase in value, as I'm interested in investing in a piece that could potentially appreciate in the future.