AN EARLY 20TH CENTURY FRENCH WHITE METAL AND LAPIS LAZULI DESK CLOCK BY GUSTAVE KELLER FRERES, PARIS of rectangular plinth form, the silver coloured metal (unmarked) mounts stamped 'G. KELLER' twice and with G.K. initials within a lozenge, the white enamelled dial also signed 'G. KELLER PARIS', the single train movement winding from the underside, 11cm high The movement is winding and ticking but not fully tested or guaranteed.  For a similar lapis lazuli veneered clock by Gustave Keller, see Sotheby's, New York, 1 December 2001, lot 17.