![Universal Postal Union on Twitter: "A piece of postal history is touring the globe! #UPU_UN is taking its historic collection of international reply coupons (IRCs) on the road. Next stop: Macao, China. Universal Postal Union on Twitter: "A piece of postal history is touring the globe! #UPU_UN is taking its historic collection of international reply coupons (IRCs) on the road. Next stop: Macao, China.](https://pbs.twimg.com/media/Dnh0AgXU0AA3UaR.jpg:large)
Universal Postal Union on Twitter: "A piece of postal history is touring the globe! #UPU_UN is taking its historic collection of international reply coupons (IRCs) on the road. Next stop: Macao, China.
![I received a Universal Postal Union coupon from a very nice French person who collects film festival memorabilia and requested I send them some postcards from our film festival. I didn't know I received a Universal Postal Union coupon from a very nice French person who collects film festival memorabilia and requested I send them some postcards from our film festival. I didn't know](https://i.redd.it/rmjfscasex961.jpg)
I received a Universal Postal Union coupon from a very nice French person who collects film festival memorabilia and requested I send them some postcards from our film festival. I didn't know
![Other & unclassified - 1947 YEAR COUPON REPONSE INTERNATIONAL - UNITED STATES OF AMERICA - 9 CENTS - AMERIQUE USA BUONO Other & unclassified - 1947 YEAR COUPON REPONSE INTERNATIONAL - UNITED STATES OF AMERICA - 9 CENTS - AMERIQUE USA BUONO](https://www.delcampe.net/static/img_large/auction/000/254/866/156_001.jpg)
Other & unclassified - 1947 YEAR COUPON REPONSE INTERNATIONAL - UNITED STATES OF AMERICA - 9 CENTS - AMERIQUE USA BUONO
![Margaret H. Murdoch, Glasgow, Scotland, to Lady Editor. March 31, 1960. | Amon Carter Museum of American Art Margaret H. Murdoch, Glasgow, Scotland, to Lady Editor. March 31, 1960. | Amon Carter Museum of American Art](https://amoncarterweb.s3.amazonaws.com/website/panth-live/styles/full_width_varied_height/s3/artwork/A2008-045-01-05-06-007-064/documents/thumbnails/carter_a2008-045-01-05-06-007-064_4-0.jpg)
Margaret H. Murdoch, Glasgow, Scotland, to Lady Editor. March 31, 1960. | Amon Carter Museum of American Art
![Stamp Auction - Argentina international reply coupons - Auction # 2141 WORLDWIDE + ARGENTINA: General November auction, lot 637 Stamp Auction - Argentina international reply coupons - Auction # 2141 WORLDWIDE + ARGENTINA: General November auction, lot 637](https://philatino.com/jalil/2021-11-04/47936-01.jpg)