What Does CTO Include?

Cancel To Order refers to stamps that were not used for mailing letters, but were canceled so they can be sold with cancelation, right?
Are these stamps considered CTOs?
Their gum is intact, and it's the same quarter of a cancelation at other stamps from their series.



Also, I used to think that CTOs were in countries like Eastern Europe, South America, North Korea, and the Persian Gulf countries.
Yet I started noticing gummed canceled stamps from Switzerland and West Germany. Everyone does CTOs?

The stamps above could also be stamps soaked from first day covers, which results in very crisp, well-placed cancels. I don't know whether people draw a distinction between CTO and FDC-originating stamps.

In my opinion a CTO stamp is any stamp which has been cancelled, but has not gone through the mail.

More definitions
https://www.stampcommunity.org/dict...stamps_c.asp

http://stampsmarter.com/Learning/Glossary_C.html

Don

The Swiss Post sells CTO stamps - sometimes for the special postmarks.

Here's an example for sale on Swiss Post right now - https://www.postshop.ch/en/Products...-A205560?P=1

Thank you all for sharing your views.
From all of the above, I gather that west Europe "CTOs" are less rejectable as CTOs then the countries in Rod's scan.
Revenuecollector - the gum was shiny and intact, so it wasn't soaked off of FDC. More likely sheets were canceled on the day of issuing, separated by dealers and sold.
Halfpenny Yellow - your definition would include unused FDC.
For me, but that's just my opinion, any used stamp that enabled a letter to reach its destination, even if not recognized by UPU, is more "postal" then mints, CTOs and unused FDCs.

If you look at the Swiss Post site, they sell the CTOs as sheets and singles at the same face price as mint.

CTO's seem to be more popular to collect and viewed more favorably in Europe than they are in the U.S.