Gucci vintage convertible evening clutch with snap-on covers

I found this adorable evening bag but know nothing about it and can't find any reference. The black silk-satin clutch is approx. 9" wide x 6" high x 1-1/2" deep. Gold-tone hardware latches allow you to change covers and convert to shoulder-style. It comes with two reversible covers: a multi-colored Florentine print on canvas reverses to black leather, plus a brown silk-satin reverses to black silk-satin. The brown silk carries a tiny leather tag that says "Gucci made in Italy." Inside the clutch itself, above the zipper compartment, is printed "Gucci" in gold script. Does anyone know the era?