Major Cherrypick -- Sell or Keep?

I sold mine: https://forums.collectors.com/discussion/890382/photos-of-my-once-in-a-lifetime-find-1968-s-pr70-dcam-roosevelt-update-the-coin-has-been-placed/p1

Although it was in my core collecting area, the decision process for me was to ask myself, "If I had the cash in hand could I justify spending it on this coin?" At that time of life the answer for me was no; today, my answer may be different. That coin is a condition rarity that for all practical purposes, apart from the plastic, is the same coin as a PR69 DCAM. In the event a 2nd PR70 DCAM was made, the value would significantly decline.

I have not once second guessed my decision to sell it. I may wish I still had it, but that's not the same as wishing I hadn't sold it.