Both Kim Ryholt and the German Egyptologist Daniel Polz concur that this pharaoh did not rule at or near the start of the 17th dynasty but rather late into the 17th dynasty just prior to the final three known kings of this dynasty (Senakhtenre, Seqenenre and Kamose.)[REF]
Nubkheperre Intef's tomb was originally penetrated by tomb robbers in 1827 but some of its treasures made it into the hands of Western collectors; his unique rishi style coffin was purchased by the British Museum from the Henry Salt collection where its catalogue number is EA 6652 [REF].