Sassone - Meaning Of Term "Decalco"

Reading through my recently purchased Sassone Italian specialized catalogue - it certainly is a beautifully done and very informative catalogue, and goes into detail on some of the classic issues.

The meaning of most of the stamp terms is pretty clear without really knowing Italian, but puzzling over the term "decalco". Often used as "decalco della soprastampa" as a variety for overprinted stamps, but also as a variety for non-overprints.

I got a translation of as "decal of the overprint". However, "decal" doesn't make much philatelic sense and web searches haven't helped me much.

I'm thinking it means perhaps over/underinking, or maybe shifted printing? I know it doesn't refer to the position of the overprint. Anyone familiar with the term that can shed light on this?

I have a spreadsheet of philatelic terms in 6 languages. Though Italian is not one of them it does have Spanish. And in Spanish "decalco" is translated as setoff. Maybe that will be helpful.

Yes definitely - thanks. Will read some more descriptions in the cat to see if that works.

Hi! Italian here :)
A "Decalco" is an ink transparency on the back of the stamp, caused by a lot of different factors: sometimes only the overprint is "copied"

and, more rarely, the entire stamp vignette

That's perfect @MaryMonty - thanks so much for clearing this up for me!

Although decalco isn't on it, here is a list of some philatelic words translated into several different languages that you may find useful. They are in English, French, German, Italian, Spanish and Portuguese.

https://www.stampshows.com/translate.html

It looks to me that 'decalco' would translate as 'offset'.

Strictly speaking, it would be 'set off.'