[fr0sty]

Regardless of whether the bond has a coupon payment or not the face value of the bond is due at maturity. In your example the $1 coupon is still paid but in two years you also get $100 back on your $50 purchase (netting 20+%apy).

Of course if the government defaults on your bond you get maybe on $1 coupon and end with a net loss of $49.

[illumin8]

Ah yes, you're correct. So my yield is way off. Thanks for the correction.