wear the king's coat

Doctor, I thought you had worn the king's coat!

When you wear the King's coat and have someone like old Mister Allday at your side, you'll see the sense of it.

That reminds me,' said Jack, 'should you dislike wearing the King's coat for the occasion, you and the gentlemen who are to have pendants?

wear the King's coat like the young gentlemen, like Mister Lovie who was killed?

He is not one of those pompous little upstarts ... he is intelligent, better educated than many who wear the King's coat.

He thought of the small frigate Audacity, knowing the risk she might have to take, and all the similar risks he had known and shared since he had worn the King's coat.

I don't care a button myself for Paul's Penny, or such things," he admitted in answer to some antiquarian openings from the clergyman who was slightly acquainted with him, "but I wear the King's coat, you know, and it's a serious thing when the King's uncle leaves a thing here with his own hands under my charge.