Preliminary identification
Photo reference
2 uploaded photos
Overview
This is a gold-tone enamel lapel or tie tac featuring the classic 'Call Before You Dig' safety campaign logo, issued during an international public works conference in Denver in 1980. The back bears a custom engraved plaque noting the delegation from the 'Dig Center of TTA, Republic of China, Denver 1980'. It comes complete with a traditional chain and buttonhole guard.
Story
Before the nationwide 811 hotline was created in 2007, local utility safety programs were pioneered by the APWA in the 1970s. This pin commemorates an international exchange where representatives from Taiwan visited Denver in 1980 to study American underground utility damage prevention.
Maker / Origin
The Utility Location Coordination Council (ULCC) was formed under the American Public Works Association (APWA) in the mid-1970s to prevent disastrous accidental severances of gas, electric, and telecom lines. They spearheaded the 'Call Before You Dig' movement that eventually evolved into today's mandatory 811 systems across North America.
Condition & Value
Very good vintage condition overall. Shows minor surface tarnishing and light edge wear consistent with age, but the enamel is fully intact and the back plaque lettering remains sharp. Condition is typical for vintage trade memorabilia.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Your first full report is on us.
See sold comps, value drivers, and where to sell. One complimentary report, no card required.
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.