Hong Kong
British Colony. Elizabeth II Mint Error 20 Cents Pair,
1) 1975 Foreign Planchet Error - AU Details (Cleaning) PCGS, KM36
2) 1994 Foreign Planchet Error - UNC Details (Cleaning) PCGS, KM67
Both are struck on silvery planchets instead of the standard golden nickel-brass composition.
HID02901242017
Estimate: 400-500 USD