Scott 1499A - Double Print Of Black Ink

Fellow collector sent this to me. The right stamps in the booklet all have the black color doubled. But the left stamps look normal.
Or maybe my left eye is my good eye tonight.

Very neat. It looks like a slip print, and the black appears to not affect the name at the bottom.

Jim,
Is the doubling also show on the stamp below the one you showed

I believe this is an example of a very interesting constant plate variety. I have a similar booklet. In row 1, the left stamp looks normal whereas on the right stamp various parts of the black design look doubled.

According to Library and Archives Canada, the stamp was printed by Canadian Bank Note Co. using 7-colour lithography (see http://data4.collectionscanada.ca/n...G&SECT3=ITLV). I can make out six of the seven: the standard litho colours (cyan, yellow, magenta, black) plus gold and dark green.





Referring to the images of Santa's bag on the left and right stamps of my booklet pane, at first glance the black lines on the right stamp look doubled. This effect is caused by two things:

1. The black colour on the right stamp is out of register with the cyan, yellow, and magenta. The black is shifted to the left. But, as shown by the left stamp, this is no ordinary colour shift. The black on the right stamp was incorrectly positioned on the black litho plate. Hence this is a constant plate flaw. Every booklet pane from the same position on the plate will show a shift on the right stamp but none on the left.

2. What of the second set of "black" lines to the right? They aren't really black lines. They are the combination of the cyan, yellow, and magenta colours. This is why the isolated parts of the black design (the lettering at the bottom and also the copyright date at the bottom right) do not appear doubled. They are produced by the black colour only.

Different booklet panes on the plate show different degrees of doubling.

jimjung...To me if it was a true slip print, would also the writing "swiety mikolaj"" also be doubled...something is going on there though.

Robert

Here is the 2nd row of the booklet. It looks to me that all the stamps on the right side have doubling in the black ink. The left side stamps are all normal.

Something to check out if you have this booklet in your collection !