Washington Head Denomination
in Numerals - 1 CENT

Perf 10 - perforated 10 on at least 2 adjacent sides

Perf 11 - perforated 11 on at least 2 adjacent sides

Perf 12 - perforated 12 on at least 2 adjacent sides

Perf 10 Coil - perforated 10 on sides
or top/bottom

Perf 8½ Coil - perforated 8½ on sides or top/bottom

Imperforate - No perforations
on any side

Unusual or Compound
Perforations - 11x10, 12x10, 12.5

Private Perforations - Vending
and Affixing Machine Perforations