Inscribed at lower left in graphite, "Nymphenburg".
Ryskamp, Charles, ed. Twenty-First Report to the Fellows of the Pierpont Morgan Library, 1984-1986. New York : Pierpont Morgan Library, 1989, p. 336.
Watermark: fragment of a shield with volute crowned by a smaller shield (probably Heawood 3267). Watermark, beta radiograph. shield, coat of arms. 144247wm_1984_32_WM_beta.jpg