Antique Guilloché Enamel Silver dragonfly brooch

Spectacular, circa turn of the century, antique Art Nouveau dragonfly brooch by renowned British silversmiths and jewellers John Atkin & Sons, signed JA&S sterling silver and hand numbered, made out of 925 silver with lavish imperial royal blue enamel with intricate "veins" details imitating real insect wings texture in guilloché technique, a unique wearable art piece! Condition: the enamel is in immaculate and rare condition for the age, no noted flaws, comes from a non-smoking environment.