Postal files at the Smithsonian National Postal Museum Library
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You searched for: "Perforations"
| Folder title: | 210.22-1 Perforations Photo-Electric Cell (electric eye) |
| Date: | 01/12/1935 |
| Description: | The electric eye plates permit the use of the old and the new perforating machines. The electric eye detects which letters have perforated stamps. |
| Collection: | Third Assistant Postmaster General Files |
| Includes: | Correspondence |
| Folder number: | 03-05-03 |
| Subject(s): | Perforations |
| Folder title: | 210.22-2 Perforations of Postage Stamps By Private Devices |
| Date: | 12/22/1934 |
| Description: | Letters advising the Post Office Department they are receiving circulars from companies that want to repair and/or make perfins (perforated initials) postage stamps. |
| Collection: | Third Assistant Postmaster General Files |
| Includes: | Correspondence ; Articles |
| Folder number: | 03-05-04 |
| Subject(s): | Perforations ; Postage Stamps |
| Folder title: | A New Perforation Machine |
| Description: | Announcement of a new perforation machine. Photograph of the machine. |
| Collection: | Third Assistant Postmaster General Files |
| Includes: | Product Announcements ; Photographs |
| Folder number: | 01-01-06 |
| Subject(s): | Automation ; Postal Service - Equipment and Supplies |
| Original source: | Miller Engineering Company |
| Folder title: | Postage Stamps - Schermack Machines |
| Date: | 12/16/1948 |
| Description: | Stamp dispensing machines |
| Collection: | Third Assistant Postmaster General Files |
| Includes: | Brochures ; Correspondence |
| Folder number: | 05-01-21 |
| Subject(s): | Postage Stamps |
| Original source: | Joseph J. Schermack |
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