Thank you for deciding to stamp these as reproductions! Like you said, it won't stop the hardcore counterfeiters, but will make it more difficult for the "small timers". The effort is much appreciated!
and thank you, for noting that I was just re-hashing the years-old positions which I had held without re-evaluating them!
I also note that it will prevent the chains of people re-selling a replica as an original just because they bought it as one, not knowing better.