3¢ Washington Head
Imperforate Stamps
Type I Flat Plate
Double-line Watermarked
Type I Flat Plate
Unwatermarked
Type II Flat Plate
Unwatermarked
Type IV Offset
Unwatermarked
Method of Printing - Once you have determined that the stamp is imperforate, next determine the method of printing, either the flat plate or offset method. The 3¢ stamp was not issued imperforate using the rotary press method.
