New vintage locket pendant necklace

New vintage locket pendant necklace Rare find. Retro modern classic. Original tag still on “Hand Engraved” and “Created by Artistic”. Simple oval Locket: 17x20 mm, 3 mm thick Flat squarish chain (cardano?): 18” chain, full 1 mm wide New vintage c. 1970s. No visible hallmarks. Silver tone metal (silver plate, costume, or steel?). Made by Artistic Jewellery Canada (Canadian company!).