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Two Different Printing and Perforating Rooms at the Bureau of Engraving and Printing (BEP)  
 

 
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Pillar Of The Community
2361 Posts
Posted 09/12/2017   07:27 am  Show Profile Bookmark this topic Add jogil to your friends list  Get a Link to this Message


For sheet-fed Hoe flat plate press printed stamps (U.S. Scott # 554, perforated 11 x 11).




For web-fed Stickney rotary press printed stamps (U.S. Scott # 634, perforated 11 1/4 x 10 1/2).

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Edited by jogil - 09/12/2017 08:27 am

Valued Member
United States
479 Posts
Posted 09/15/2017   3:15 pm  Show Profile Bookmark this reply Add txstamp to your friends list  Get a Link to this Reply
That's a nice condensed comparison of two major printing methods.
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Pillar Of The Community
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United States
2447 Posts
Posted 09/15/2017   4:08 pm  Show Profile Bookmark this reply Add Partime to your friends list  Get a Link to this Reply
Some of those people are very bored, looking like they are poised for the clock to strike 12:01. Love the white hats / caps in the second photo. Thanks for posting.
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Edited by Partime - 09/15/2017 4:09 pm
Valued Member
United States
479 Posts
Posted 09/15/2017   4:34 pm  Show Profile Bookmark this reply Add txstamp to your friends list  Get a Link to this Reply
In the second photo, the lady at front right almost looks as though she has a computer mouse in her right hand. I'm thinking no, however.
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Pillar Of The Community
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Posted 09/15/2017   7:08 pm  Show Profile Bookmark this reply Add jogil to your friends list  Get a Link to this Reply
The BEP continued to use these line perforations (11 x 11 and 11 1/4 x 10 1/2) on some of their postage stamps up until 1985. However, the flat plate perforator was replaced by the L-perforator and the bar and wheel perforator was replaced by the electric eye perforator.
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Edited by jogil - 09/15/2017 7:08 pm
Bedrock Of The Community
Australia
20094 Posts
Posted 09/16/2017   02:02 am  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply
Interesting Post.
Thank you.

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