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Photogravure " hard dot " technique  
 

 
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Pillar Of The Community
Canada
4351 Posts
Posted 03/26/2014   5:19 pm  Show Profile Bookmark this topic Add lithograving to your friends list Get a Link to this Message
This Australia Philatelic Bulletin March 1978 article
mentions that the " hard dot " technique was used
in producing the photogravure cylinders for the
18c Australia Day 1978 stamp issue.

First I heard of this term.
Any more information out there?


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Edited by lithograving - 03/26/2018 7:09 pm

Pillar Of The Community
Netherlands
585 Posts
Posted 03/27/2014   11:29 am  Show Profile Bookmark this reply Add Galeoptix to your friends list  Get a Link to this Reply
This sound like surface-variable screen instead of depth-variable screen!

I hadn't realised it was used for Australian stamps, but it was quite common for USA stamps and occasionaly in other countries like Poland or Brasil...

Quite often referred to by "autotypical" screen...




groetjes, Rein
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Pillar Of The Community
United States
5863 Posts
Posted 03/27/2014   12:31 pm  Show Profile Check smauggie's eBay Listings Bookmark this reply Add smauggie to your friends list  Get a Link to this Reply
You learn something new every day.
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APS Member #: 222539 AAPE, Maplewood Stamp Club (MN), Northern Philatelic Society, US Philatelic Classics Society, Auxiliary Markings Club, Canal Zone Study Group, Minnesota Postal History Society
Pillar Of The Community
Canada
4351 Posts
Posted 03/27/2014   4:01 pm  Show Profile Bookmark this reply Add lithograving to your friends list  Get a Link to this Reply
Thanks Rein.

Would you know what years and what stamp issues this type
was used on for the US, Polish and Brazilian stamps?
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