Canada
Elizabeth II Mint Error "Off-Metal" Prooflike 50 Cents 1970 PL64 PCGS, Royal Canadian mint, KM75.1. Generally this issue is struck in nickel and the only other similar archived example we have of the type was sold almost 10 years ago and brought $3000 in our 2007 Long Beach Sale.
HID02901242017
Estimate: 1000-2000 USD