Chalfont Clocks has dated this Guilmet Davy Lamp Clock to the 1890s.
It was Guilmet who in 1868, in collaboration with Edouard Meyer, first placed a driving chain on a bicycle, set below the seat to drive the rear wheels, and so produced the first bicycle powered in the method that is standard on all machines.

Guilmet is recorded as not just an horologer, but also a bijoutier (jeweller) and doreur (gilder). Under the entry for Doreurs in the 1861 almanach he is described thus: horologer, bijouterie, orfeverie argentes de la maison Christolfe, Fbg-St. Martin, 103 et 108; an horologer, jeweller and silversmith supplying the well-known Parisian jewellers and silversmiths, the Maison Christolfe; The additional entry under Horologers describing him as a clockmaker only. Guilmet was an active member of the Chambre Syndicale, along with A.H. Rodanet, Paul Garnier and other well-known horologists. (Derek Roberts).
p258, Mystery, Novelty & Fantasy Clocks, Derek Roberts 1999.
Chalfont Clocks has dated this Guilmet Davy Lamp Clock to the 1890s.
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