Matching Pewter Dolphin Brooch & Earrings Set

Set of pewter dolphin-themed brooch / pin and earrings. I am unsure of the age; they are from a relative's costume jewelry collection. The pewter portions of the pin and earrings are in very good used condition. The earring hooks are moderately tarnished but can easily be swapped out. The brooch backing is mildly tarnished but will not show when worn. I'm willing to sell these pieces separately if desired. Let me know in the comments. From a pet-free and smoke-free home. Thank you for looking at my closet.