SCP-1987
Link here
This one and the following few scps we rated over a year ago and before a few realizations. We won't be changing it's original rating because when we first read it we genuinely thought it was the coolest thing. It is still very cool we'd just likely change it from purple to green. The comments on this one say it's too long but we generally like the longer ones that give us more to work with. The shorter scps can be good but can sometimes give so little that there is nothing to work with.
Also, this one isn't really meant to focus on the mystery I feel like? Personally, I just love that it expands the world for me. Situations where the foundation has to go against what it does best always intrigues me. The ones where talking with the SCP is possible, and an agreement can come between them. The fact that this one touches on how humans will bond with anything and anyone. Several towns were doing regular trading with dead people, and none of them cared. They took their weird coins and gave em what they asked for. Maybe it is still a purple to us. I like this SCP, it's good and it's fun. 10/10 Would recommend.