Rotary Press Printing vs. Flate Plate Printing ?

Can someone out there tell me the difference between Rotary Press Printing
and Flat Plate Printing? I came across the two terms in connection with the
US Whistler-stamp 1934 (The Artist's Mother), Scott # 737 and 738. I have
what I believe to be #737, but would like to know the difference between the
two printing methods.

Thanks in advance.
--
Best regards
Ann Mette Heindorff (Mette)
http://arthistory.heindorffhus.dk/frame-Whistler.htm
------
Outgoing messages.checked with Norton AV

"amesh" found some misplaced characters and posted
k:

Can someone out there tell me the difference between Rotary Press
Printing and Flat Plate Printing? I came across the two terms in
connection with the US Whistler-stamp 1934 (The Artist's Mother),
Scott # 737 and 738. I have what I believe to be #737, but would
like to know the difference between the two printing methods.

Thanks in advance.

Rotary Press uses curved plates, thus the stamp will be 'stretched'
slightly in the direction of curvature. There is a gauge that will
show whether a stamp is flat or rotary. If you have the US
Specialized, then you can measure the appropriate side, per the
dimensions given for the two printings.

I've no catalogs available right now, so perhaps a US poster could
look up the dimensions for you?

The rotary press version is perforated 11x10.5 and the flat press is
perforated 11.

Al

JAMc wrote:
"amesh" found some misplaced characters and posted
k:


Can someone out there tell me the difference between Rotary Press
Printing and Flat Plate Printing? I came across the two terms in
connection with the US Whistler-stamp 1934 (The Artist's Mother),
Scott # 737 and 738. I have what I believe to be #737, but would
like to know the difference between the two printing methods.

Thanks in advance.


Rotary Press uses curved plates, thus the stamp will be 'stretched'
slightly in the direction of curvature. There is a gauge that will
show whether a stamp is flat or rotary. If you have the US
Specialized, then you can measure the appropriate side, per the
dimensions given for the two printings.

I've no catalogs available right now, so perhaps a US poster could
look up the dimensions for you?

"Al G." skrev i en meddelelse
...
The rotary press version is perforated 11x10.5 and the flat press is
perforated 11.

Thank you very much, both JAMc and Al. At least I understand the differences
now. As per my understanding of Scott I assume that both varieties were
issued on May 2, 1934. With so minor differences, what was the reason to
print this stamp in two different methods?

Mette




Al

JAMc wrote:
"amesh" found some misplaced characters and posted
k:
Can someone out there tell me the difference between Rotary Press
Printing and Flat Plate Printing? I came across the two terms in
connection with the US Whistler-stamp 1934 (The Artist's Mother),
Scott # 737 and 738. I have what I believe to be #737, but would
like to know the difference between the two printing methods.

Thanks in advance.


Rotary Press uses curved plates, thus the stamp will be 'stretched'
slightly in the direction of curvature. There is a gauge that will show
whether a stamp is flat or rotary. If you have the US Specialized, then
you can measure the appropriate side, per the dimensions given for the
two printings.

I've no catalogs available right now, so perhaps a US poster could look
up the dimensions for you?

Mette:

Your question is answered in the excellent article at:
http://www.ggriffith.com/mother.htm

Blair

Hello Mette:

For the difference in rotary and flat plate methods of
printing, I recommend the article at :
http://www.1847usa.com/washfrank/printingmethods.htm

An interesting article on this stamp can be found at:
http://www.ggriffith.com/mother.htm

Basically you have three stamps.

Scott
Number Printing Perforations
-----------------------------------------------------
737 Rotary 11 x 10.5
738 Flat plate 11 x 11
754 Farley issue Imperf.

Although the Mothers of America stamp was printed
by both the flat plate and the rotary press methods,
only the flat plate stamp was re-issued as a Farley.

Best Regards
Blair
================

"Blair (TC)" skrev i en meddelelse
ups.com...
Hello Mette:

For the difference in rotary and flat plate methods of
printing, I recommend the article at :
http://www.1847usa.com/washfrank/printingmethods.htm

An interesting article on this stamp can be found at:
http://www.ggriffith.com/mother.htm

Basically you have three stamps.

Scott
Number Printing Perforations
-----------------------------------------------------
737 Rotary 11 x 10.5
738 Flat plate 11 x 11
754 Farley issue Imperf.

Although the Mothers of America stamp was printed
by both the flat plate and the rotary press methods,
only the flat plate stamp was re-issued as a Farley.

Best Regards
Blair
================

Hello Blair,
Thanks for excellent answers and good references. So that's where #754 comes
in. I will study your links in depth tomorrow, and eventually make a note of
this on my Whistler-page.

Best regards
Mette