Riddle 87

My first can boast a head and tail,
Has feathers and an eye,
And sometimes wings; yet what avail?
It cannot walk or fly.

And St. Paul was my first, we ’re told;
And my first may be bought
In bottles,--but though rare and old,
Its value ’s almost naught.

Out of my last my first is made,
My last is in a crown;
And heroes wield its shining blade
For glory and renown.

My whole, a marvel of brute force
With human power combined;
We never see it now, of course,
We ’ve left it far behind.