He could show his credentials at a moment's notice with proud defiance.
The sign and credentials of the poet are that he announces that which no man foretold.
"I think that first, perhaps, I should look at your credentials," Vard suggested.
Let us first have our dinner, M'Kinlay, and then I'll write your credentials.
If you think I am lying, young gentlemen, I will show you my credentials.
Have you examined his credentials, and how do you find them?
They are among books, but not of them, lacking the credentials of their companions.
You can bet I plants myself in the door and calls for credentials!
Tomorrow, I will present my credentials to the Secretary of State here.
He showed his credentials, at which the manager bowed obsequiously.