Sightings of SCP-513-1 reoccur every 14 to 237 minutes. Questioning of bystanders indicates that SCP-513-1 is invisible to those who have not been exposed to SCP-513.
Upon being sighted, SCP-513-1 reportedly turns away and runs out of view before disappearing without a trace. Roughly one hour after exposure to SCP-513, victims will begin to catch glimpses of SCP-513-1 when opening doors, walking past mirrors, turning their heads, or performing any other actions that result in a sudden change in visual perception. Exposure victims report feelings of being watched by an unseen entity and present elevated heart rates and blood pressure. Attempts to remove the rust chemically or mechanically have had no success.Īny noise produced by SCP-513 immediately induces strong anxiety in all sentient beings who hear it, regardless of their previous mental status. No marks or engravings are visible on its surface due to the large amount of corrosion.
Physically, SCP-513 is an unremarkable, rusty cowbell.
