The New Yorker is experimenting with GIF covers!
Check out this item in my Etsy shop https://www.etsy.com/uk/listing/215386942/first-day-cover-sa-airways-jan-smuts
WWF First Day Covers. Liberia, Liberian Mongoose. Combine Postage. (WWF121) - http://stamps.goshoppins.com/worldwide-stamps/wwf-first-day-covers-liberia-liberian-mongoose-combine-postage-wwf121/
Jane Austen 2013 Stamps - via British First Day Covers #janeausten
Check out this item in my Etsy shop https://www.etsy.com/uk/listing/215407591/europa-famous-people-first-day-cover
Stamps - Australian :: Australian First Day Covers :: 2011 - 1019 - Bush Babies…
China Stamps - 1994-10, Scott 2509-11 Souvenir Sheet + Stamps First Day Covers, Zhaojun's Marriage to Xiongnu - (9410C)
Art Master First Day Covers | view larger image for First Day Covers First Day Covers: SG Number ...
Postal Commemorative Society stamp book full of stamps by EMTWTT
China Stamps - 1995-4 , Scott 2558 Promote Social Development, Better Our Future - First Day Cover - (9255J)