Shabaka is assumed to have died in his 15th regnal year based on BM cube statue 24429, which is dated to Year 15, II Shemu day 11 of Shabaka's reign.
Shabaka is assumed to have died in his 15th Regnal Year after a reign of approximately 14 years. This evidence is based on BM cube statue 24429 of a man named Ity which is dated to Year 15, II Shemu day 11 of Shabaka's reign.