http://www.beckett.com/news/2015/04/...-rookie-retro/

Since Leaf Trading Cards has become known for delivering early cards of up-and-coming talent, they managed to dig back into their recent releases and the first half of each pack will have a Rookie Retro Proof card that is hand-numbered to five copies or less. Instead of a signature on these cards, there will be a gold foil stamp instead noting that it is a proof version and hobbyists can look for names like Kris Bryant, Johnny Manziel, Odell Beckham, Jr. and Connor McDavid.