Prestige Premium have a refractor/rainbow foil background on the card, Prestige Plus has a silver/metallic foil on the background of the card, normal/base Prestige does not have any foil applied to the back of the card. Hope that makes sense! In most photos of the cards you can tell Prestige Plus because the background isn't as clearly visible because the silver foil comes up dark in photos/scans.
Prestige Premium have a refractor/rainbow foil background on the card, Prestige Plus has a silver/metallic foil on the background of the card, normal/base Prestige does not have any foil applied to the back of the card. Hope that makes sense! In most photos of the cards you can tell Prestige Plus because the background isn't as clearly visible because the silver foil comes up dark in photos/scans.
I've been pondering the same problem, I took a look on ComC at the same cards across the three sets Prestige, Prestige Plus and Prestige Premium and there is nothing on the back of the card that says which set it is from, I've compared the Kyrie Irving \ Mark Price Connections in Prestige and Prestige Plus and I've compared the Kyrie Irving Base #17 in Prestige and Prestige Premium and in every case the backs of the cards are identical and the image on the front of the cards are identical with the exception of foil \ refractor coloration.
Here's an example of the three cards side by side - base/Plus/Premium (cards 2/3/4 left to right). In almost every instance, if the background image is remotely difficult to make out it will be the Plus version.
Here's an example of the three cards side by side - base/Plus/Premium (cards 2/3/4 left to right). In almost every instance, if the background image is remotely difficult to make out it will be the Plus version.