J.V Stuart has only one silhouette attributed to him. This is presumed to have been painted in the early 1820s due to the style of the clothes of the sitter. This silhouette is in the TEF Sainsbury collection and is signed in the concavity on the bust-line termination.
Source: McKechnie (Author of, British Silhouette Artists and their Work 1760-1860)
Stuart, J. V. (McKechnie Section 2)