Struck under base with hallmarks (leopard's head, lion passant, date letter for 1722-3) and with maker's mark of Thomas Mason, the cover flange struck with lion passant, leopard's head and maker's mark of Thomas Mason, the stand with lion passant, leopard's head and date letter for 1722-3, the interior of lamp cover with lion passant.
By 1979, Benjamin Sonenberg, New York; June 1979, sold by Benjamin Sonenberg at Sotheby's, New York, lot 594. May 23, 1990, sold by an anonymous owner at Christie's, London, lot 27, where most probably bought by Alan and Simone Hartman, New York, NY; 2001, gift of Alan and Simone Hartman. (Accession date: February 21, 2001)
Gift of Alan and Simone Hartman and Harriet J. Bradbury Fund