The Chrome Update base cards feature only 50 of the 400 cards found in the normal Topps update set, and they are easily distinguishable due to their "Bubble/Pulsar" Refractor finish. As you can see in the pics below, they are super shiny and have that distinctly round bubble-style background. All of the cards have this look.
Below are all the Dodger cards that are available. As you can see, only three of the twenty-three Dodger cards found in the update base set are available in Chrome form.
#US280 Mike Bolsinger #US308 Howie Kendrick
#US376 Joc Pederson