Henry Fuseli. 
Hamlet and the Ghost, 1789.

Plate XLIV from Volume II of Boydell's Shakespeare Prints;
the illustration in Boydell is based on the original painting of 1789.The text accompanying the engraving: 
Hamlet. Act I. Scene IV. A platform before the Castle of Elsineur.Hamlet, Horatio, Marcellus, and the Ghost.Painted by H. Fuseli, R. A. Engraved by R. Thew.