Printing With White Ink

On a stamp normally the white color is the result of an unprinted part. Therefore white is the color of paper.
But I know two US stamps (Sc 1340 and 1385) that have white color printed in what appears to be some kind of engraving.



I don't know if this was done for technical or artistic reasons, but the result is attractive and unusual.
I don't remember other stamps printed with white ink

Canada issued a stamp in 2017 for the 100th Anniversary of the Maple Leafs
hockey club.
White ink/colour was used for printing the maple leaf with the P value indicator/indicia

Scott/Unitrade 3044

Another is the USA Lacemaking set from 1987, Scott 2351-54.

There is a valuable EFO of this issue with the white ink missing.

Hi Lithograving, I have been looking at the Maple Leafs stamps that was printed with some white. I had never seen this before either. After a long examination I believe that the only parts of the stamp that are printed with white are the white parts on the leaf itself, the copyright logo, the letters "TM" and the "NHL 2017". That's my opinion.

bk80 said:






I agree.

Austria issued in 2016 this stamp for the annual contest picking
the most creative stamp design given a certain theme.
2016 theme was The Future

Austria
Scott 2595

Printing by Joh. Enschedé Stamps B. V.
Colours : offsett for the grey, white foil and embossing.

Scanning does not show it off very well....



...here a better image taken with iphone



and the back of the stamp showing the opposite of embossing which
is debossing.



The writing on the stamp translates from German to English using DeepL

The future is not yet written. It is what we make of it!