Two gold rings about 2,000 years old were unearthed last week with human bones at the Don Yai Thong site in Thailand's Phetchaburi province.
One ring carries characters believed to be Bhrami script, initially read as “pusarakhitasa,” or “the one protected by Pushya,” while the second is plain gold.
Thai officials said the burial's owner may have been a Vaishya merchant, adding to evidence that the site held ceremonial burials for wealthy or upper-class people.
Eight skeletons, bronze and gold jewelry, pottery and other artifacts have been found since February after villagers discovered ancient bronze drum fragments in a rice field.
The site, about 130 kilometers southwest of Bangkok and dated to Thailand's late prehistoric Iron Age, is due to finish excavation within a month before public display plans.