Zen said:
Looks like a replica. The charger doesn’t look original, and that’s probably a sticker showing the lock screen.
The charger seems legit for European versions—it has the EU adapter attached. As for the screen, I doubt it’s a sticker. I found this on a French marketplace, and the text ‘Déverrouiller’ is in French.
This isn’t official, 100%. Apple never made the first iPhone in black. Either someone anodised the back or replaced it with a third-party one. Since the backs weren’t user-replaceable, the insides might be damaged too.