The 2013 Topps Chrome Update Series Baseball is a 55-card set that features Rookies and regular players. It included a Yasiel Puig, Dodgers Rookie card.
The base set has two types of parallels, Gold (#/250) and Black (#/99).
There are 35 different memorabilia cards from the All-Star Games to chase and a 20 card insert set, Postseason Heroes.
Every 2013 Topps Holiday Mega Box has two Chrome Update packs. Each pack has four cards. Mega Boxes also come with five packs of the usual 2013 Topps Update Series Baseball.
#MB4 Jose Fernandez Marlins
#MB9 Mike Trout Angels
#MB39 Nolan Arenado Rockies
#PH14 Nolan Ryan Mets
#MB18 Bud Norris Orioles
#MB27 Bryce Harper Nationals
#MB32 Zack Wheeler Mets
#MB45 David Wright Mets
Chrome does not like scanners but seriously three Mets from 2 packs!