I'm probably over cautious but these days, it's probably a good idea. I'd black out the address and phone number. I don't want someone coming to my house or trying to steal it. I'd also black out the order and customer numbers too. Who knows what clever way someone could scam service/warranty stuff with those. If the buyer questions this, tell them they'll get the numbers with the completed purchase (minus address/phone). If they don't like that, move on.