Hello.
I would like to remind you that RX 4xx and RX5xx were the best cards for mining era.
Most of them were used in mining farms.
I saw in china a lot of them "refurbished" - but i don't know by who.
The point is : i own several Polaris cards, most of them were used for mining.
In my case i under clocked them and under voltaged them.
But not many users did that.
So IF...and i underline...IF indeed it is a New Old Stock, then for sure you can buy one with confidence.
Those cards are very good.