[marzoumanian]

It's a fair question to ask in this cynical age we live in, Peter. But if I had to hazard a guess I would say very few, if any other, cards were altered. Having done some research into how Mr. Copeland acquired his mindboggling collection I learned that it was accomplished in relatively few years. He was a very private man and he did not want to deal with all sorts of dealers. If dealers had a collection they thought he would be interested they had to go through Bill Mastro and Greg B. That's my understanding. Copeland made it clear to them that money was no object. He just wrote the checks. Why would you run the risk of destroying the golden goose by tampering with not only cards but all the other sports memorabilia Copeland collected (pins, programs, posters)? Just my two cents.
It is truly amazing to go through the Sotheby's catalog. Worth getting your hands on through Amazon.
I agree with Mr. Oldjudge that if this collection were to go up for auction today it would easily surpass $50 million. But as others have mentioned in this forum, there will always be room for collectors to buy cards that will never make headlines. Yes, I'm aware of rising prices and I have benefitted from what's going on right now. But I enjoy my cards and collecting because they bring back great memories of a wonderful game. And I can touch them. Enough said.