I’ve never heard of them unless it was years ago and I forgot. My first thought was who are they? I acquired these 2 rolls in 2006 and totally forgot about them until today. They were in a small box with rolls and rolls of other denominations. They toned beautifully on the ends but 2 of the ends have damage from a coin wrapper that was adjusted too tight. They are dated 2006 and one roll has a Denver label, which is correct.
"Private exchange. Not affiliated with the US Mint or the United States Government" Says it all. Hope you find some great coins in those. Let us know.