1980's USPS ZIP+4 Lapel Pin US Postal Service Gold Tone Enamel Hat Pin

1980's USPS ZIP 4 lapel pin in gold tone with enamel details, a vintage hat pin for collectors of postal memorabilia. Used condition with cancellation marking noted, showing light wear consistent with age. Classic advertising piece featuring the USPS and ZIP 4 motif from the 1980s era. Great addition to a pinback or postal service collection. Please review photos for condition and feel free to ask questions before purchase.