It looks like it's either been opened or the battery has expanded (see photo).
FAULTY Nintendo 3DS XL Console Black Missing Track Pad, Cracked D-Pad Etc
Red Nintendo 3DS XL Games Console Unit Only Faulty Spares Repairs Free P+P
Faulty Nintendo 3ds Xl Blue Console
Nintendo 3DS XL SPR-001 Red Blue Console Faulty Spares Or Repair
New Nintendo 3DS XL Metallic Blue Console *Faulty Frozen*
Faulty Nintendo 3ds Xl Blue Console broken hinge
