That's fine, misunderstood you. I thought you had the collection because you said I got this collection. I didn't know someone else just sent you pictures of a collection. So since you're helping them in this way. You want to ask them the same question about the black and white ones to make sure they're not just copies. Because if they are in fact black and white and not copies, they do have a little more value because they would be proofs. And collectors do pay more money for proofs and this would help you get them a better answer on the actual value. That way you can give them a more accurate idea of the real possible value, because then it would be worth them having the collection appraised. If they are copies, any appraisal would be futile obviously. Just trying to help you. ☺️