This machine was probably produced c1870 and has the name Agenoria on the arm. The brass needlebar cover has a representation of the deity Agenoria - Goddess of Industry & Silence seated next to a prone Lion, there is also a Registered Design lozenge for 24th February 1869 (we think!) which appears centrally just beneath the machines name. Engraved on the cloth plate is the company trade mark which represents a bobbin with crossed needles with "The Franklin Co." round it.
❤✄◡ً✄❤ Manufactured by the French Hurtu Company during the 1870's, "La Productive" is considered by many today to be their most desirable model. It is beautifully adorned in gilt and mother of pearl. - http://www.dincum.com/library/lib_hurtu_la-productive.html