In zero coupon bonds; 1) are issued at zero premium and zero discount 2) have zero face value 3) are always issued at discount?

issued at discount and redeemed at par at maturity time

3. are always issued at a discount. A zero coupon bond  is a debt security that doesn't pay  interest ( a coupon) but is traded at a  deep discount, rendering profit at maturity when the bond is rendered for its full face value.