As far as I know, the original pen-and-ink has yet to surface on the market or in a museum. It’s an interesting composition and it takes some staring at to make sense of what’s going on. Or one could simply read the passage it illustrates:
Now whilst Sir Tristram was in that bath, the Queen [of Ireland] and Belle Isoult looked all about his chamber. And they beheld the sword of Sir Tristram where it lay, for he had laid it upon the bed when he had unlatched the belt to make himself ready for that bath. Then the Queen said to the Lady Belle Isoult, “See what a great huge sword this is,” and thereupon she lifted it and drew the blade out of its sheath, and she beheld what a fair, bright, glistering sword it was. Then in a little she saw where, within about a foot and a half from the point, there was a great piece in the shape of a half-moon broken out of the edge of the sword; and she looked at that place for a long while. Then of a sudden she felt a great terror, for she remembered how even such a piece of sword as that which had been broken off from that blade, she had found in the wound of Sir Marhaus of which he had died. So she stood for a while holding that sword of Sir Tristram in her hand and looking as she had been turned into stone. At this the Lady Belle Isoult was filled with a sort of fear, wherefore she said, “Lady, what ails you?” The Queen said, “Nothing that matters,” and therewith she laid aside the sword of Sir Tristram and went very quickly to her own chamber. There she opened her cabinet and took thence the piece of sword-blade which she had drawn from the wound of Sir Marhaus, and which she had kept ever since. With this she hurried back to the chamber of Sir Tristram, and fitted that piece of the blade to the blade; and lo! it fitted exactly, and without flaw.Happy St. Patrick’s Day!
Upon that the Queen was seized as with a sudden madness; for she shrieked out in a very loud voice, “Traitor! Traitor! Traitor!” saying that word three times. Therewith she snatched up the sword of Sir Tristram and she ran with great fury into the room where he lay in his bath. And she beheld him where he was there all naked in his bath, and therewith she rushed at him and lashed at him with his sword. But Sir Tristram threw himself to one side and so that blow failed of its purpose. Then the Queen would have lashed at him again or have thrust him through with the weapon; but at that Gouvernail and Sir Helles ran to her and catched her and held her back, struggling and screaming very violently. So they took the sword away from her out of her hands, and all the while she shrieked like one gone entirely distracted.