This is a rare vintage 18ct gold UnoAErra Italian religious pendant with a guardian angel to the front and a St Christopher to the back.
* The angel figure is carrying a red vial/test tube, symbolising blood.
* The wording at the top likely relates to blood donation or blood type (“gruppo sanguigno”).
* These were often worn in Italy in the mid-20th century as:
    * pilgrimage medals,
    * religious protection charms,
    * or medical ID pendants identifying the wearer’s blood group in emergencies. The pendant weighs 11.5g and measures 2.7cm in diameter. The length of the pendant inclusive of the bale is 3.7cm. Fully hallmarked for 18ct Italian 🇮🇹 gold.