Editor's Note:

I personally assisted Milt Cohen as he assembled his amazing mint error collection. I sold him many off-metals, off-centers, and transitional mint errors.

Natalie Halpern was a well known mint error dealer many years ago. She sold the Mint Cohen collection which included many unique and finest known mint errors. It is fascinating to not only view all of the rarities that were in his collection, but also to remember where some of them have gone over the years.