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Valued Member
United States
32 Posts |
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 Did the POD use experimental gum breakers on the 1921 Sc 543? This one has a horz. gum ridge that crosses the entire stamp. It isn't as thick as the type I. Could it be an equipment malfuntion?  |
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Pillar Of The Community
United States
3568 Posts |
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Pillar Of The Community
United States
6661 Posts |
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EKU for Type 1 Gum Breakers is 1923. First know Stamps to get the T-1 Gum Breakers were 581 - 591. |
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| Edited by stallzer - 03/03/2011 12:37 pm |
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Valued Member
United States
32 Posts |
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This is definately not a type I gum breaker. There is only 1 single ridge across the stamp. I would think though the POD would have tried several options before deciding on the type I. Has anyone seen odd bars on the pre 1923 type I? |
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Pillar Of The Community
United States
6661 Posts |
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Found this, but still no mention of the 543's.
In the 1948 issue of The Bureau Specialist, Durland writes, "I have before me nine different breaker varieties on that stamp alone the 1922 2¢ rotary stamp and they were taken from a comparatively small number of blocks." Sloane wrote about a block of the twenty cent Special Delivery stamp with breakers running in both directions. |
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Valued Member
United States
32 Posts |
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The picture above appears to be a single line gum breaker. I recently bought a couple of blocks of 4 Sc 543 that have gum breakers spaced at 13.50mm. Does anyone have early use gum breakers on theirs? Are they different than the ones I've Shown. William   |
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I think that 542 and 543 have these types of gum breakers. They all occur at a slight angle on these rotary press sheet stamps. They appear to be precursors to gum breakers. There are also some middle margin dash lines for perforator alignment that are found on U.S. 542, 543, 581, 583, 612 before the experimental electric eyes and electric eyes. |
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| Edited by jogil - 06/11/2013 7:40 pm |
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Pillar Of The Community
United States
611 Posts |
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The Scott 542 haze a single gum ad gum breaker added late in production. The Scott 543 added type I gum breakers (2 bars 13mm apart). The gum breakers are unlisted by Scott. I haven't ever seen a sale that was at a premium for the gum breakers.
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Pillar Of The Community
United States
1414 Posts |
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581 is known to exist without gum breakers (as is 531). I have a 581 without breakers somewhere in the reference collection. I once handled a 531 plate block without breakers.
I don't recall seeing any 542 or 543 without breakers, but they may exist.
Clark |
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Pillar Of The Community
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Clark, of course 531 exists without breakers :-) What rotary issue did you intend to mention above? Maybe 538? |
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I was wondering about the reference also. Anything prior to the fourth bureau is experimental. I've seen experimental going back to second bureau. It would be strange to them on the offset series. |
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Pillar Of The Community
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I believe that the 1 cent perf 10 581 has been reported without gum breakers. I have one somewhere in the reference collection. Rotary press coil waste, offset and flat plate stamps are not expected to have gum breakers.
Some more modern 6 cent Christmas stamps, normally with gum breakers exist without. They can sometimes be found in postage lots. I don't have the Scott numbers handy.
Clark |
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| Edited by cfrphoto - 04/09/2015 11:53 pm |
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Posted 03/03/2011 12:04 pm
