Countries With No Overprints.

Oh. Thanks for the warning Warrehouse. Definitely not a region or river in the Azores then.

More!
Ras Al Khaima, Scott's Listed
Rio Muni,
Moldavia,
Moldavia-Walachia,
St. Marie De Madagascar,
Senegambia & Niger,
Slovenia, Modern So Far! [overprints use in 1920 & 1945]
Spanish West Africa,
Zurich,
Geneva,
Basel,
World Meteorlogical Org.,
UPU
International Telecommunication Union,
World Intellectual Property Org.,
UNESCO

More!

Confederated States of America,
UN, Geneva, So Far?
UN, Vienna, So Far?
Northern Ireland,
Scotland
Wales & Monmouthshire
Guernsey,
Alderney,
Isle of Man, [ovpt 2010]
Jersey, [ovpt 2010]
Cayes of Belize, So Far?
British Columbia & Vancouver Is.
Vancouver Is.,
Falkland Islands Dependencies, [deleted]
Heligoland,
Ionian Islands
Malawi, [delete]
Thai-Malaya, Thai Occupied Malaya
Wilayah Persekutuan,So far!
Malaysia, So Far!
Namibia,
New Brunswick,
New Republic,
Ross Dependency,
Nigeria, so far!
Northern Nigeria,
Northern Rhodesia,
Nova Scotia,
Nyasaland, [deleted]
Muscat & Oman,
Papua & New Guinea [delete]
Federation of South Arabia,
Southern Nigeria,
South Georgia & South Sandwich Islands, so far!
Stelland,
Sri Lanka, [delete]
Van Diemensland,
Trucial States,
Alwar
Bamra
Barwani,
Bhor,
Bijawar
Dhar,
Duttia,
Jammu & Kashmir
Kashmir
Jasdan
Jhalawar
Jind,
Las Bela,
Morvi
Nowanuggur,
Orchha,
Rajpeela,
Wadhwan,
Chefoo,
Foochow,
Nanking,
Wei-Hai-Wei

Done,

Peterethio,

Now we are up the wazoo in your catagory.

Amazing Warrehouse. Thanks for all the work you have put into this. It is not a small job. I'll alphabetise these with occasional comments (eg, Indian States) and see what we come up with. Thanks again to you and to others.

2011 blew it for them. 50th anniversary of the WWF has some overprint/re-valuations.

not sure how this will play out for your qualifications, but here are some options:

1. SHS issues for Slovenia (verigar/chain breaker series) were overprinted and re-valued for postage due usage.
2. Italian & German stamps overprinted during WWII Axis occupation.
3. Laibach provincial issues (issued under German annexation) were overprinted after liberation for use in Yugoslavia (overprinted "SLOVENIA 1945")

but, as for the modern Republic of Slovenia, then no, so far!

Isle of Man and Jersey both overprinted some s/s in 2010, if they count. not the stamp itself, but in the border.

Jersey - Roses, and native flower
Isle of Man - Girlguiding

Namibia 1997 "standard mail" (and $4 value obliterated) on buffalo issue

Papua New Guinea had a bunch of re-valuations in 1994.

Malawi - 1976 overprint on 1975 bird issues 15t & 30t for Blantyre Mission Centenary

Papua New Guinea has had many surcharges, which are also overprints such as 720, 866, 870 etc...

Sri Lanka 1985 7.00r on 1983 "Ceylon white-eye" bird .35c

here's another one that may be a stretch.

South Arabia. some Aden stamps were overprinted with "South Arabia" in English and Arabic, along with a new value.I know this doesn't count since it was "technically" a new country.
but... (and there is always a but, isn't there?) some of these "South Arabia" overprinted stamps received a second overprint, with "1874-1965/Winston Churchill" as well as some with "1917-1963/John F. Kennedy"

I knew there maybe I may have missed some. I'm working with 1995 catalog.

Khuli, South Arabia stays , the others you mentioned were issued by the small states within the Federation.
All national issues have no overprint.

Sri Lanka I found what you mentioned plus another one, these are noted in 'small' print, so It's out!

Papua & New Guinea I missed. The one's you mention weren't in my catalog yet. But I still should have seen Scott 686.

Malawi found my miss there! Thanks.

Slovenia, we could count as out with the post WW1 issues. But it was nearly 70 years apart. Yet they are both geographicly the same. The Occupation issues by Italy & Germany are not the same territory and were not issued under the name Slovene. However the liberation issued overprint in 1945 would be.
What catalog did you find the liberation issue mentioned?

don't have any catalogs, yet. just an accumulation of tidbits picked up across the web. looking at those liberation issues, notice they also have "JUGOSLAVIJA" on them, too, but they were designed for use in Slovenia. Similar overprints without the Jugoslavija were put on some of the Reich Hitler stamps, but I didn't mention them because of the criteria.

All the finds I have posted for other countries were all just from searching delCampe auction site.