A 38 With Double Transfer

I suppose I could have extended this thread, but, while I've been lurking, I haven't posted in a while so might as well make a new topic of it. I've been spending a lot of time (and, ahem, other things) with the 1c of 1851-61, but I've been coming to think of all the Toppan Carpenter and Co stamps of that decade as my special interest. And so, this is the first stamp I've bought in a while that wasn't blue:



After the deal was done, I looked in the Specialized and saw that it calls out two positions, 891L and 991L, that are double transferred. Naturally I got to wondering what the double transfers looked like. A quick search of Siegel brought a beautiful unused block of six 77-79/87-89L1. Ah-hah, I could easily compare two side by side and figure out what the extra marks were:



And when I looked at my stamp, whaddya know:

finches, could you give the scott number for that block of 4 3cent washington? Thanks.

The block of 4 is not a double transfer. I can't remember just what the phenomenon is called. Some one else can probably help with that.

otto, you have found the double transfer---nice find.

Ahh so much better when you discover these things after a purchase rather than buying for that reason. Safe to assume a US double transfer is same as Canadian re-entry?

Double Transfer - a plate variety in which a portion of the design is doubled, that is, it appears twice.

Rohumpy, The above is PART of the definition of 'Double Transfer', in Google under 'Double transfer stamps'- 2nd item down.

The stamps I showed had - 'A (easily seen)portion of the design appearing twice'

A double transfer is caused by the roller containing the stamp impression is rocked into the plate containing the stamp entries. It is done to repair an existing impression. The doubling is seen when the transfer roller does not exactly coincide with the existing stamp design on the printing plate.

The block of 4 showed a doubling of all 4 stamp images. (bythe way, what happened to the image? I no longer see it) It could be a double print or double impression (maybe these two are the same) The doubling of the entire design of 4 stamps is not a double transfer as I understand the term double transfer.

In your reply, finches, you say a portion of the design, so the entire design is not doubled in a double transfer.

I will be gratified to be corrected.

Rohumpy, Apologies about the image disappearing. I had Technical issues.

I couldn't understand how those small lines-marks on the 30c stamps are all caused by the rocking of the plate, especially the mark shown by the right bottom arrow.

By the way, that is a gorgeous block of four. Sure hope you are the proud owner. I am going to guess that is an offset print. The offsets did have double prints.