Sports Card Central

United Nations stamps wanted

I am looking for these and only these postage stamps from the United Nations. They must be in mint condition. I have a lot of sports cards I can trade for them; I would also consider buying but the price would have to be too good to resist. I am giving Scott catalog number and description.

Scott #10: 50 cent world headquarters bldg 1951
Scott #C3, C4: 15 and 25 cent air mail
#22: 5 cent Human Rights 1953
#24: 8 cent Food and Agriculture 1954
#27, 28: UN Day 1954
#29, 30: Human Rights 1954
#38: UN Day Souvenir Sheet 1955
#146-149: Definitives 1965
#184: Starcke Statue 1968
#276-277: Human Settlements 1976
#278-279: Postal Administration 1976
#308-309: UNDRO 1979
#310-311: Year of Child 1979
#314-315: Court of Justice 1979
#316-317: New Intl. Economic Order 1980
#390-391: Nature Conservation 1982

I also need complete year sets for 1977 and 1978.

These are all the stamps I'm interested in, so there's no need to offer others.

Thanks
Ted