Watch List notes:

Switzerland. Zurich. Otto III 973-1002. AR Denar (18mm, 1.08g). Zurich mint. Struck ca 980-990. Stylized head left / Small cross pattée. Dbg 1268; See Peter Ilisch "Eine schweizerische (?) Münze aus der Zeit Ottos III" in Numismatisches NachrichtenBlatt, Juni 2014 (pp 215-217). Extremely rare. Very Fine. Flat spots, slightly wavy flan. Extremely Rare.
Estimate: 2000 EUR