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Table of Contents

All Document IndexesRailway Post Office (RPO) Cover with Washington-Head Stamp
IntroductionRailway Post Office (RPO) Cover Addressed to Denmark
U. S. Three Cent StampIllegal Use of Savings Stamp on Cover
Mr. ZIPIllegal Use of Revenue Stamp on Cover
U. S. Parcel Post Stamp Used for First Class on CoverOrange County, California Postal History
U. S. Five Dollar Stamp of 1922U. S. Special Delivery Stamp
Example of American Flag Machine CancellationSwiss Airmail Stamp
Christmas Seals Used on a Postcard 'Tied' by a Cancellation DeviceRalph Williams Ford License Plate Holder, c. 1965
Perfection Mechanized HandstampEarly Teddy Bear Postcard
Washington-Head StampsEarly Return Address Labels
Privately Perforated Washington-Head Stamp


[Mr ZIP Image]

Mr. ZIP Stamp Sheet Selvage

[Mr ZIP Image]

Mr. ZIP Stamp Sheet Selvage

These images were scanned from the selvage of blocks of stamps issued by the United States. The Mr. ZIP character was used by the Postal Service to advertise the idea of the Zone Improvement Plan (ZIP) postal coding system. Mr. ZIP appeared on several stamps and stamp-related publicity items. This image comes from the 1970's.

For many years, the Postal Service has been placing non-stamp images in the selvage (paper areas outside the stamp images, near the edge of the sheet) with printing plate numbers, copyright notices, slogans, and other markings. Examples of the messages include "MAIL EARLY IN THE DAY" and "USE ZIP CODE".

Collectors have accumulated blocks of stamps with plate number markings for many years. These additional markings, however, are quite common, and are priced lower than plate numbers in the Scott catalog.


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6/16/23, 11:41 AM