Without anyone knowing your name or address?
If you're talking about bitcoin to fiat cashout, then try localbitcoins. Completely anonymous and you can either deal face to face with another person or online. Both are safe if you deal with a reputable person.
You are protected by the localbitcoins escrow as well, so no worries.
does nobody else have any thing else to say apart from localbitcoins ?
localbitcoins is really of no use if you are looking to cash out when price is high or for cashing out any decent amount
(too many satflaps commenting here IMHO)