Stamp Giveaway # 7 (Paraguay limited issues) [solved]

Paraguay may have issued the most designs for the Rowland Hill 1979 death anniversary. Some countries may have had more different stamps but with common designs. No one can accuse the Paraguayans of not doing their best to make money off of collectors, with stamps featuring aircraft, stamp rarities of the world, other anniversaries, and Paraguayan classic stamps. Michel South America 2013 lists these stamps and sheets at 165 Euros, unused never hinged, numbers 3174-3180 Block 337; Block 342; 3259-3267, Block 348, 3270-3276.

One of these sets has a consistent design error through all its stamps (3174-3180, Block 337). What is that error?

One of the countries that failed to commemorate Hill's death centenary did have a privately issued minisheet from the national philatelic society. This country has issued stamps since 1853. What is the country?

First correct response received by or prior to noon eastern US time on July 13, 2021 will be the winner. If no correct response received the first response will win. My decision as to the winner is final. All responses in English please.

Good luck to all participants!

Will

The funnels of Ile de France were red and black not black. And the country...Chile?

The Provisional International Civil Aviation Organization was established by fifty-two countries on 7 December 1944 at Chicago.
Thirty five years later, on 1979 Paraguay celebrates its seventy fifth anniversary, they are ahead of time


Then this private commemorative issue is from the Sociedad filatelica de Chile

Congratulations Frenchlover! Let the celebrations begin.

The private Chile minisheet I have is not overprinted for the Royal Wedding. I did not know that one existed.

Your stamps will be on the way shortly.

Will

I really like these specific collections, a worldwide event acclaimed by the whole world. I have a collection (not complete) of the 100 years of the red cross in 1963

I still don't get the back penny ...

Frenchlover, My collections were 100th, 200th, 500th, etc. anniversaries of people's birth and death; anniversaries of any organization with 3 countries or more as members (UN, UPU, Red Cross, etc.); any stamps from areas that at one time belonged to ASEAN; and when I quit I was just starting to get overprints and surcharges for anything. I think North Korea was the only Rowland Hill set I was missing. I think I had Red Cross and UPU complete. Guyana was a hard country to get and Equatorial Guinea Copernicus.

I'm sorry that after the 1980s too many gimmicky stamps were issued, like the NCLT coins of the past few years. Too many unscrupulous promoters of stamps like Leaders of the World (famous trains from Tuvalu and its islands even though there is no railroad there and then intentional errors to bilk collectors and give Tuvalu stamps a bad name).

Will

... and with your huge collection of coins and banknotes your home is a real strongbox