Here is a very nice copy of perfect dark for the N64. Please inspect the photographs some very closely for condition of the box, cartridge, internal sleeve and manual.
Things to note small indentations and slight fraying to the edge on the front of the box that I have pictured clearly with a light reflecting to show this. There is also an 18 sticker on the face of the cart I’m not sure if this is factory however I’ve never seen it on a perfect dark cart before I think it looks quite cool personally.
Please also inspect the tray I’ve tried to picture as best as I can. A flap on one side has torn off where it is perforated. I have pictured it torn off and I’ve since applied a piece of tape to the back to hold it in place that seems to be working just fine apart from this. The internal tray is an excellent condition.
I am supplying this box copy with a plastic sleeve as pictured in one of the photographs to protect it from shelfware.