48 calendar year
1963 -1965 Post Office New Stamp bulletin posters to give away to the first person making a $5 donation to SCF.
These are the bulletins that post office would post to announce up-coming stamp issues. In 1965 you could be on the Post Office mailing list and they would send you an announcement poster. The bottom paragraph of the post tells collectors how to acquire FDCs for the issue.
1. 5 Jan - 5-cent embossed stamped envelop
2. 6 Jan - 1¼-cent and 4-cent stamped envelops
3. 7 Jan - 8-cent stamped envelop
4. 9 Jan - 5-cent Battle of New Orleans commemorative stamp
5. 16 Feb - 5-cent Physical Fitness-Sokol commemorative stamp
6. 14 May - 5-cent Winston Churchill commemorative stamp
7. 28 Jun - 5-cent International Cooperation Year United Nations commemorative stamp
8. 11 Aug - 5-cent Herbert Hoover commemorative stamp (see example below)
PM Me with your snail mail address if interested.
I might have more, just haven't found them all yet.
Found 40 more.