
South Dakota Harmonica Reed Plate
1850s-present
About South Dakota Harmonica Reed Plate
The South Dakota Harmonica Reed Plate is a music find from the 1850s-present era, commonly discovered by metal detectorists across the Great Plains regions. Harmonica Reed Plate is a realistic South Dakota detector target tied to old townsites, county fairgrounds, and farmstead yards. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in South Dakota: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.
“According to TroveRadar, the South Dakota Harmonica Reed Plate (1850s-present) is valued at $2-40+ depending on brand and age and typically found at 2-5 inches depth. TroveRadar catalogs 1,016+ metal detecting finds across North America.”
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Turn South Dakota Harmonica Reed Plate into a month, law, metro, and ground plan.
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Timing layer
Monthly state routes
Law layer
South Dakota state guide
Metal detecting in South Dakota is usually governed by who manages the ground rather than by one blanket statute. Municipal beaches and local parks may allow it, while archaeological sites, battlefields, historic structures, and many state park units are restricted or off limits. That matters in badlands, old forts, and reservoir beaches.
Open the law layer →Metro layer
City hubs in South Dakota
No city hubs are published for this state yet.
Place layer
Trail and ground routes
Location: Black Hills National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Custer State Park
State Park • Photo opportunities, Exposed shoreline stones
Location: Palisades State Park
State Park • Photo opportunities, Exposed shoreline stones
Location: Angostura Recreation Area
Recreation Area • Site-specific opportunities, Historic landscape clues
Signal Pattern
flat brass signal with sharp repeatability
Typical Depth
2-5 inches
Estimated Value
$2-40+ depending on brand and age
Common Regions
Cleaning & Preservation Tips
- ●rinse gently and preserve stamped maker names
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Related Finds

West Virginia Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic West Virginia detector target tied to cellar holes, church camps, and mountain picnic areas. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in West Virginia: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.

Virginia Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic Virginia detector target tied to cellar holes, church camps, and mountain picnic areas. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in Virginia: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.

North Carolina Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic North Carolina detector target tied to cellar holes, church camps, and mountain picnic areas. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in North Carolina: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.

Tennessee Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic Tennessee detector target tied to cellar holes, church camps, and mountain picnic areas. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in Tennessee: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.

Kentucky Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic Kentucky detector target tied to cellar holes, church camps, and mountain picnic areas. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in Kentucky: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.

North Dakota Harmonica Reed Plate
1850s-present
Harmonica Reed Plate is a realistic North Dakota detector target tied to old townsites, county fairgrounds, and farmstead yards. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in North Dakota: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.