A lower section of the
case houses prepared slides dated 1847.
An identical example is
located at the Science Museum, London signed :
Carpenter & Westley, 24 Regent Street,
LONDON (cat. ref: 25-78). An additional example
of this microscope signed James Robinson,
Dublin was offered at the June 29, 1995
Christie's auction sale as lot 190. Another similar
example, signed by Abraham, but lacking the
mechanical movements of the stage has been recently
been offered for sale.