An enamel and gem-set cruciform pendant by Fabergé

An enamel and gem-set cruciform pendant by Fabergé, the budded cross with blue enamel border and diamond set terminals, with a central square-shaped ruby and linear decoration. Suspended from a millegrain-set diamond bale. With blue enamel inscription to reverse which reads 'Save and Protect' in cyrillic. Marked КФ , 72 zolotnik with St Petersburg mark and workmaster's initials BA for Viktor Aarne. 6cm long. Fitted case by Asprey.