Per 
Item #: SCP-XXXX
Object Class: Safe
Special Containment Procedures: SCP-XXXX is to be kept in a glass cubic box (2.5m x 2.5m x 2.5m). Level 1 clearance is needed to access SCP-XXXX but supervision from a security member is also required.
Class-D testing is authorised. Class-D personnel must wear SCP-XXXX and note down any immediate effects upon wearing SCP-XXXX. Once SCP-XXXX is taken off, physical examinations will be needed to see any change in the subject's health.
Class-D testing is no longer permitted. SCP-XXXX is to only be accessed for janitorial servicing.
SCP-XXXX must be cleaned bimonthly (once every two months) with a sodium bicarbonate solution to prevent copper corrosion or oxidation. Security personnel must supervise any janitors cleaning SCP-XXXX.
Description: SCP-XXXX is a Spartan helmet that is assumed to be used during the Battle of Thermopylae (400 BCE). SCP-XXXX is made of a copper substance and was discovered in an archeological site in Laconia, Greece (located in the Peloponnese peninsula).
SCP-XXXX is a volatile anomaly. Once a person wears SCP-XXXX, SCP-XXXX will release a sharp blade (hidden within the backside of itself) down the neck of the subject, merely touching the cervical spinal cord. Attempting to remove SCP-XXXX will result in the spine being severed from SCP-XXXX's blade. This will paralyse the subject and cause blood loss, slowly killing the subject.
SCP-XXXX has been relocated to [DATA EXPUNGED] in Site-16 as of June 2021.
Addendum:
Incident XXXX-1:
When SCP-XXXX was first put into containment in Site-16, a test involving a Class-D and Dr. Lanktorn (senior research member) was scheduled on [REDACTED]. The test resulted in the death of Subject D-4721. A video log of the test has been recovered recently:
VIDEO LOG
DATE: [REDACTED]
NOTE: This video log is an example of SCP-XXXX's abilities and lethality.
[BEGIN LOG]
[00:01]: D-4721 enters SCP-XXXX's chamber.
[00:03]: DR. LANKTORN: Subject D-4721, take SCP-XXXX out of its container. Handle it with care.
[00:10]: D-4721 takes SCP-XXXX out of its box.
[00:12]: DR. LANKTORN: Subject D-4721, place SCP-XXXX on your head.
[00:15]: SCP-XXXX is worn by D-4721. No reaction is present.
[00:18]: DR. LANKTORN: Subject D-4721, do you feel different upon wearing SCP-XXXX?
[00:25]: D-4721: (Calm) Not yet. I can't really feel anything strange.
[00:32]: DR. LANKTORN: (Writing on notepad) Ok, report any strange sensations or pain to us.
[1:23]: After almost a minute of waiting, a sound of a blade unsheathing is heard followed by screaming from D-4721. Blood appears on the back of D-4721's neck.
[1:24]: D-4721: (Screaming in agony) Doctor, get this thing off of me!
[1:29]: DR. LANKTORN: (Stern) D-4721, remain calm and still.
[1:36]: DR. LANKTORN: (On radio) This is Dr. Lanktorn, requesting medical staff. We have a situation regarding SCP-XXXX. It seems to have attacked Subject D-4721. We are unsure of what has exactly happened but there is a visible injury on the test subject's neck, possibly damaging the test subject's artery or spinal cord.
[2:05]: D-4721 attempts to take off SCP-XXXX.
[2:10]: DR. LANKTORN: D-4721, do not touch or provoke SCP-XXXX. Do not attempt to try and take off SCP-XXXX. Wait for medical staff to arrive.
[2:30]: D-4721 tries to take off SCP-XXXX again. He falls on the floor and does not move
[2:35]: DR. LANKTORN: Subject D-4721, can you hear us?
[2:43]: No response is given from D-4721.
[2:47]: DR. LANKTORN: D-4721, please respond.
[2:54]: Still no response is given from D-4721.
[2:56]: DR. LANKTORN: (On radio) We have an update on SCP-XXXX. The test subject is presumed deceased as of now. No response is given from the test subject. We need an update on when medical staff is arriving.
[3:34]: //Two medical officers enter the room and check D-4721.
[3:42]: MEDICAL OFFICER 1: No pulse. Subject is confirmed dead. We will have to assess the damages caused by SCP-XXXX.
[3:56]: DR. LANKTORN: Understood.
[4:00]: The two medical officers take off SCP-XXXX and check the injury site.
[4:46]: MEDICAL OFFICER 2: D-4721's cervical spinal cord has been completely severed. There has also been some damage on the carotid artery and the jugu-.
[END LOG]
Dr. Lanktorn was interviewed shortly after this incident. It has been decided by O5-██ to cancel any further testing on SCP-XXXX.
