The foreskin had retracted by itself and he discovered it in this condition as he went to the potty. He is now nearly 5. He has yet to notice that he is different from Daddy. As he gets older, like most kids, he'll become modest and prefer privacy. I've known of circumcised men who didn't even know until adulthood that their fathers were intact.
Some men are unsure as to what their father's circumcision status is.
Our offspring receive no physical characteristics that are identical to ours. They are a blend of two different people. A child may have eyes similar to his mother's and a nose like his father's. Until a little boy reaches puberty, this is impossible to achieve anyway. The absence of pubic hair will be just as noticeable, if not more so, than the presence of a foreskin.