Double Transfer Vs. Double Impression

Hi guys.
Have trouble figuring out the difference between double transfer and double impression. Does anybody have picks to show, so we can see the difference?

Thanks a lot.

danko,
Double transfer is where the plate position has been re-entered and the and misaligned with the first entry or where the old entry was only partially erased before a fresh entry is made. The result is that extra lines are printed.


The red arrows show some of the double transfer. A double transfer will be present in that plate position for a sheets printed from that plate.

Double impression is where part or all of a stamp is printed twice. The result is a repeat of the design.



I hope this helps to explain the difference

Excellent explanation and example pics, Russ!!

Double impressions are pretty rare. Do you own that double impression, Russ?

k

No, I just own the scan unfortunately. It is a 183a and is one of the most pronounced early double impressions. It is an absolutely wonderful stamp. I have collected about 66,000 U.S. related images, a petty sum compared to our good friend down under, but I have examples of most all U.S. varieties and many pics relating to stamp production and printing.
Edit fat fingers typo

Perfect examples of pictures being worth a thousand (or more) words. Thanks for sharing them.

Thank you very mush for the info. I was looking for examples in my stamps and found only this one so far. Is this an example of double transfer or a whole different animal.

danko, the French stamp shown is typographed, double transfers are associated with engraved stamps. Check this post for more info on engraved stamps and double transfers https://goscf.com/t/11260. In engraving the plate is relieved (recessed) in printed (inked) area. In typography the printed area is raised. Is is kind of like a typewriter or rubber stamp.

Edit Typo correction

I was soon going to ask the same thing ! Thank you so much for showing us that,,great for folks who are just getting started in this like myself.Is that Geaorge Wash 1 cent here above me double impression as well? I thoink it is looking at the 1 cent,alomost looks like I am seeing double there,like when maybe had one too many hehehe
Also would like to know how you were able to load a image that big on here,,I have tried and was rejected for some reason

The picture below would be an example of a vignette shift, not a re-entry, aka, double transfer or double impression. You'll run into these as well but a vignette shift is more of a shift in printing when a second color is applied for part of the design. So you really have Vignette Shifts, Double Transfer or know better by some as a Re-Entry and Double Impression.
Keep in mind vignette shifts are fairly common unlike a re-entry or double impression.

What you have is a color mis-registration. These stamps are not printed from engraved plates.

Thanks smauggie, I didn't realize print types had different terminologies for this occurrence. Learning more every day
I figured it was all the same.

UFOAIRMAIL,

Yes it is a double impression -- I've edited my original post to clarify that point.

With regard to images, I make all of my scans at 600 dpi.

Using a program called Irfanview, which was a free software program recommended by SCF around the time I became a member, I do the following:

a. crop the image as closely as possible
b. resize the image to 1024 X 768 pixels
c. save the image, setting the file size at 98kb
d. upload the resized image to the post

If you're interested in trying Irfanview, you can download it for free at http://www.irfanview.com/

Steve

Double impression of the stationery persuasion:

Then to add to the fun, there are stamps that you almost cannot tell if they are double impression or double transfer.

The stamp below is exceedingly rare. At first glance it is a complete double impression... until you realize that different features are doubled in different directions and distances. It is not listed in Scott and is far more scarce than the T13 or T13a double transfers. According to Richard Friedberg and people I've spoken with in the plating/variety community, there are 3 examples currently known.

(Click on the image below to view it at much larger size in order to see all the details of the doubling.)