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Same design ; different print process or printer  
 

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Valued Member
United Kingdom
227 Posts
Posted 10/24/2012   03:07 am  Show Profile Bookmark this reply Add 65170 to your friends list  Get a Link to this Reply
Thanks LITHOGRAVING for mentioning my website http://stampprinters.info/dummystamps.htm regarding specifically the Dummy Stamps Newsletter.

However, don't restrict yourself to just the newsletter section, as there is a lot more to be found via the home page http://stampprinters.info. I have currently got over 1,700 pages of information, including one that I will mention specifically as it relates to stochastic screening which JORGESURCL may find interesting. His pictures on this thread showing conventional and stochastic screening are truly excellent. Go to http://stampprinters.info/SPI_Stochastic.htm

GLENN MORGAN
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Pillar Of The Community
United Kingdom
1352 Posts
Posted 10/24/2012   06:38 am  Show Profile Bookmark this reply Add AnthonyUK to your friends list  Get a Link to this Reply
That is a great site Glenn. Many thanks
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Pillar Of The Community
Canada
4098 Posts
Posted 10/24/2012   8:56 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
Hi Glenn Morgan,

I have accessed the stamp printers info pages for a few years now
and must compliment you for providing a wealth of information
unavailable nowhere else. Great stuff, thank you.
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Canada
4098 Posts
Posted 10/24/2012   9:18 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
These 3 Mexican airmail definitives were all printed photogravure
but compare the one on the left with coarse screening with
the one on the right with very fine, tight screening.
Looks almost as if printed via offset.

Scott C265, one on the right is C472 I believe



This 80c value was originally printed engraved for which I don't have any examples to show.
Anyone have any to show?

All I have is this engraved example on stationary.






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Pillar Of The Community
Chile
1094 Posts
Posted 10/25/2012   12:13 am  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
Thanks to all. Glenn Morgan website is fantastic and contains a lot of useful information!
I like these topics of printing process, perforations, papers, etc...all what relates to technical aspects of stamps production.
I'm going to review what I have of those interesting Mexican stamps for check printing systems.

Another stamp:

SPAIN - PEGASUS - Special Delivery
Top: Typography (Scott E1) Issued 1 July 1905
Bottom: Offset-Litho (Scott E1a) Issued in 1925


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Chile
1094 Posts
Posted 10/26/2012   12:09 am  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
ITALY - King Emmanuel III
Designed by Francesco Paolo Michetti
Type-I : Engraved - Issued 20 March 1906 (Scott 93)
Type-II : Typography - Issued 1 June 1909 (Scott 111)
Type-III : Engraved (new die) - Isued October 1911 (Scott 123)

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Canada
4098 Posts
Posted 10/26/2012   11:57 am  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
Nice comparison on those Victor Emanuel.

Not only is there a colour difference in the two engraved
but also the obvious one in perforation, perf 12 for the 1906
and perf 13 1/2 for the 1911 issue.

I think I have some of them floating around somewhere,
have to check out what I have.
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Chile
1094 Posts
Posted 10/27/2012   11:59 pm  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
FRANCE - Marianne de Béquet
Fr.0,60 - Issued in 1974
Left: Engraving (Scott 1294)
Right: Typography (Scott 1292A)



Another similar stamp (Fr.0,80 - green) was also printed in Typography and Engraving (Scott 1494 and 1495) in 1976
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Chile
1094 Posts
Posted 11/01/2012   11:50 pm  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
ARGENTINA is fertile in stamps printed in more than one printing system

Zapata Slope
Top: Photogravure - Scott 693 (1960)
Bottom: Offset-Litho - Scott 886 (1970)




Tierra del Fuego - Riqueza Austral
Top: Photogravure - Scott 925 (1971)
Bottom: Offset-Litho - Scott 988 (1972)


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Chile
1094 Posts
Posted 11/02/2012   9:51 pm  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
PERU
Barrio Obrero
Top: Photogravure (Scott 429) - Printed by Waterlow & Sons (1949)
Bottom: Engraving (Scott 440) - Printed by Inst.de Grav.Paris (1951)




Mariscal Toribio de Luzuriaga
Top: Offset-Litho (Scott 415) - Printed by Columbian Bank Note Co. (1945)
Botom: Engraving (Scott 441)- Printed by Inst.de Grav.Paris (1951)


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Canada
4098 Posts
Posted 11/04/2012   12:18 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
Jorge I think you're getting lonely here being the only one posting new stuff.


I've searched all over the place looking for examples and couldn't find anything in my collection until I realized I forgot about my own country's stamps.

Canada Post has contracted out it's stamp production to various printers in the last 40+ years, therefore for various reasons the same definitives were sometimes printed by 2 or even 3 different printers.
There are sometimes differences in the paper or perforations but in other cases the only way to tell them apart is if you have an imprint block.

The following stamps were all printed multicolour lithography and except for minor colour differences they are indistinguishable.

The 43c Flag definitive first appeared Dec 1992, sheet & booklet printed by Ashton-Potter Limited

Unitrade 1359





Subsequently APL went bankrupt and in January 1994 Canada Post replaced them with Leigh - Mardon Pty. Limited a printer from Australia to assist Canada Post's other security printer Canadian Bank Note who couldn't handle the volume of printing definitives and commemoratives and besides CP likes to have 2 printers available.

Ashton Potter reappeared around 1995 this time as Ashton Potter Canada Limited but within a few years left Canada altogether and set up shop across the border in upstate New York as Ashton Potter USA and now print a large portion of American stamps.

I don't have an imprint block for this one but here is a Leigh - Mardon single. They printed sheet & booklet stamps.

Unitrade 1359c




Leigh - Mardon didn't last long either and by November 1994 the old dependable Canadian Bank Note Co took over, again printing sheets & booklets.

Unitrade 1359x



It's virtually impossible to tell apart the APL stamps from the CBNC, same GT4 Coated Papers paper & same perf.
Leigh-Mardon stamps though have perf 14.5x14.6 while the other two are 13.6x13.1




Here are a couple of booklet stamps.




So here you have different printer varieties without much variety.
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Canada
4098 Posts
Posted 11/04/2012   2:53 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
Here is another Canadian definitive printed by 2 printers.

They were issued on December 29. 1981 and were non-denominational
because when they were printed the new rates taking in
effect as of January 1, 1983 had not been approved yet.

As it was they were valued at 30c so our first class domestic rates
went from 17c to 30c all at one shot.
The government justified that obscene increase by saying that rates had been too low for years and because the Post Office was in the red due to of the exorbitant wage demands of the postal unions who constantly went on strike to get their point across.

And of course we had major inflation here in Canada with mortgages at up to 18% ( I remeber well since I had to renew for 17.75% but luckily took it only for one year), just shows how lucky people are nowadays with mortgages at 3.5%.

Anyway here is Unitrade 907 printed by the British American Bank Note
Company, one colour engraved, coated paper Plate 1







At the same time the Canadian Bank Note Co issued their version
Unitrade 907iion uncoated paper Plates 2 & 3.







The CBNC version has a slightly darker red and the uncoated
lighter paper permits the engraved portions to be visible
on the back which is not the case on the BABN version.

The engraver of the die (apparently used for both versions) was Yves Baril who engraved almost all the stamps for the Canadian Bank Note Co from the late fifties til the seventies.


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Edited by lithograving - 11/04/2012 2:55 pm
Pillar Of The Community
Chile
1094 Posts
Posted 11/09/2012   12:18 pm  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
lithograving, very interesting and beautiful those Canadian stamps. Fortunately the different printers are shown on the selvage. It must be very difficult to differentiate between them on individual stamps.

More PERU with different print process and printers :

Children's Holiday Center in Ancon :
Top: Photogravure (Scott 375) - Printed by Waterlow & Sons (1938)
Bottom: Offset-Litho (Scott 410) Printed by Columbian Bank Note Co. (1945)



Archaeological Museum in Lima :
Top: Photogravure (Scott 378) Printed by Waterlow & Sons (1938)
Bottom: Offset-Litho (Scott 412) Printed by Columbian Bank Note Co.(1945)




Worker's Houses in Lima :
Top: Photogravure (Scott 380) Printed by Waterlow & Sons (1938)
Bottom: Offset-Litho (Scott 414) Printed by Columbian Bank Note Co. (1945)



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Chile
1094 Posts
Posted 11/16/2012   7:20 pm  Show Profile Bookmark this reply Add jorgesurcl to your friends list  Get a Link to this Reply
SPAIN - King Alfonso XIII
Left: Engraving - Scott 297 (year 1909)
Right: Typography - Scott 315 (year 1920)

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Canada
4098 Posts
Posted 11/17/2012   5:37 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply

Quote:
Fortunately the different printers are shown on the selvage. It must be very difficult to differentiate between them on individual stamps.



You're right Jorge, it's almost impossible to tell them apart
except for the different perfs printed by Leigh Mardon.
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