And I'm guessing they have the faintest flashing of gold plating. I haven't tried to run any yet but I'm accumulating a pile of them so I have a good sample to base some measurements on.
BTW, these are the RF boards inside the aluminum case LNA. They usually have torx screws sealing the enclosure pieces, and they are sealed, so sometimes a good whack from a hammer is in order to get them to open up, then pry them open like a clam.