Pair of chimney tops

Dated about 1850: were given to my great aunt by her boss around 1910. Handles, geometrically shaped japanese, gilded on one side and black on the other. Front flank representing mythological subjects very finely represented. Signed below. Height 26 cm. In tbe: not chipped, cracked or yellowed (golden net a little erased in places) Withdrawal against cash payment in paris 11th m° richard lenoir (l. 5) or st sébastien (l. 8) or st ambroise (l. 9).