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Case Description

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Summary based on the NamUs case record (MP159758) and 1 other source
In the early summer of 1986, a sense of quiet concern began to grow among those who knew Arthur Daun Pierce in Hanford, California. At 59 years old, a man known to some as "Art," had not been seen for several days. On June 6, 1986, he seemingly vanished from his residence in the small city nestled in California's Central Valley, leaving behind questions that would linger for decades. Five days later, on June 11, with no word of his whereabouts, he was officially reported as a missing person to the Hanford Police Department. The initial report noted that Arthur frequently discussed plans to head back to the eastern United States, where he hoped to establish businesses focused on repairing and selling sewing machines and vacuum cleaners, a trade he knew well. His disappearance cast a long shadow, as friends and family were left to wonder what had become of the 59-year-old man.

The investigation into Arthur's disappearance uncovered that he had spoken with his family earlier in the month of June. During these conversations, he had mentioned a specific plan to travel to Colorado. His ambition was to open a new business, and he had his sights set on the Grand Junction area as a potential location. This lead provided a possible direction for his travels, yet it was a thread that seemingly led nowhere. Despite this information, no one had seen or heard from him since his last known contact on that early June day. The trail grew cold as investigators tried to piece together his last known movements and potential destination. His absence was uncharacteristic, and the silence that followed was deeply unsettling for those who knew him.

Arthur Daun Pierce was a man with distinct features; standing between six feet and six feet one inch tall, he had a solid build. His hair was brown, he wore a small mustache, and his eyes were blue. He had a noticeable broken upper front tooth and a small scar on his left little finger. There was also a mention of a possible tattoo on one of his upper arms, though its design and exact placement remained unknown. The circumstances of his case are defined by his stated intentions to travel and start a new life for himself professionally. He expressed a desire to move, either to Colorado or back east, to pursue his entrepreneurial dreams. Despite these known plans, his complete and total lack of contact with any friends or family since June of 1986 is the central mystery. All inquiries and searches have failed to locate him or provide any definitive answers, leaving his whereabouts unknown and his case an enduring mystery.

Last Seen: Jun 6, 1986

Links to Additional Sources (1)

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Possible Unidentified Matches (3)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

78%Possible
John Doe — Torrance, California
UP4129 • Found Feb 22, 1987
View case
Sex ✓Male
Age 100%Est. 55–65 vs 59
Race 100%White
Location 58%187 mi away, same state
TimingFound 9 months after last seen
Height 100%5'11" vs 6'0"–6'1"
Weight 100%185 lb vs 190–220 lb
Hair 40%Gray vs Brown
Eyes 100%Blue vs Blue
77%Possible
John Doe — Redondo Beach, California - unidentified case UP3738
John Doe — Redondo Beach, California
UP3738 • Found Sep 5, 1987
View case
Sex ✓Male
Age 85%Est. 40–60 vs 59 when missing
Race 100%White
Location 58%187 mi away, same state
TimingFound 15 months after last seen
Height 100%5'10"–6'3" vs 6'0"–6'1"
Weight 100%185 lb vs 190–220 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
76%Possible
John Doe — California
UP3872 • Found Jan 5, 1991
View case
Sex ✓Male
Age 85%Est. 40–60 vs 59 when missing
Race 100%White
Location 60%176 mi away, same state
TimingFound 5 years after last seen
Height 100%6'1" vs 6'0"–6'1"
Weight 100%175 lb vs 190–220 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.