Per 
Record of SCP-139551873
Item #: SCP-3777
Object Class: Safe
Special Containment Procedures: SCP-3777 is to be contained within a Safe-class containment locker.
Description: SCP-3777 is a record of the supposedly Safe-class object SCP-139551873, that’s suddenly being found lying on a cafeteria’s table, without triggering the alarm of the facility. In it, it’s written not as a standard procedure SCP record, but instead as semi-autobiography of a certain being that have supposedly being “captured” and “released”, as the same date of 11/11/11.
In it, the being described itself as a “the most freest being possible”, “the incarnation of impossible”, and “Best Wife Ever”, along with a picture of a blond lady, presumably in her late-teen/early-20s. The being self-reported itself as having being “captured” by the SCP on the day of 11/11/11, as a “special visit” to the facilities. Also as the same days, she’s also “released”, after she done her “special visit”, and specifically leave this behind as “proof that she’s a cointaiment object of SCP”.
Attempt to validate the authenticity of the record turn up negative, as there’s absolutely no trace of the existence of SCP-139551873. Looking through the surveillance footage at the date of 11/11/11 shown no sign of the Object, nor is there any sign of tampering of any kind, within the clearance of the facility.
However, according to SCP-343: “SCP-139551873 absolutely exist”.
Upon further testing, the object is shown to exhibit property of standard-issue SCP record, and is also indestructible, against many experimental process, up to and including: Dip the record in Acid, attempt vaporization by high-intensity laser, testing with [DATA EXPUNGED], testing with nuclear explosion, testing with anti-matter, etc…Also, any attempt of removal from it original spot , and isolation as various distance and dimension have no effect, and the object is always found in the same cafeteria table (The only exception is when it’s catalogue and files in the record shelf, and is also the recommended containment procedure).
As of right now, there’re no form of evidence indicating the existence of SCP-139551873, aside from SCP-3777, and testimony of SCP-343
