I have seen a few chams like this. They have no bars because they are not full panther they are Panther/Oustalet hybrids.
He does have bars he has the black bars and white stripe of a hybrid, in the black and white photo you posted. You posted before about having hybrids so how do you not know that is a hybrid lol.
His face is the biggest give away, he has Oustalets markings on his face and eyes. He is 100% hybrid, as for the babys, they are hybrids then mixed with more panther blood? who knows what they may look like.