Illinois Harmonica Reed Plate Value Guide
Harmonica Reed Plate is a realistic Illinois detector target tied to fairgrounds, schoolyards, and plowed farmsteads. Rather than pretending every state has the same history, this profile frames the signal around the kinds of sites that actually produce it in Illinois: beaches, town greens, camps, farmsteads, transport corridors, or old recreation grounds.
Value Range
$2-40+ depending on brand and age
Cleaning Tips
- ●rinse gently and preserve stamped maker names
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