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| Type I Flat Plate Double-line Watermarked |
Type I Flat Plate Unwatermarked |
Type II Flat Plate Unwatermarked |
Type IV Offset Unwatermarked |
| 3¢ Washington Head Imperforate Stamps |
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| Type I Flat Plate Double-line Watermarked |
Type I Flat Plate Unwatermarked |
Type II Flat Plate Unwatermarked |
Type IV Offset Unwatermarked |
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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. |
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