“it is hard to feel enlightened when I do not have a face – well no physical sense of identity and all that”

This is (ironically the point of enlightenment). When you go past seeing your physical self, memories and thoughts as anything substantial- as something that adds up to a individual separate “self”. With no ego ‘in the way’ we evolve into an expression of Self/ Divine/ God/ Buddha

“Invisible Man or should I say person?”

Yea. Often it has been said of a Gnani that it is as if there no-one is there.