Our Solar System! 4 Different USPS Forever Self-Adhesive Sheets 2016-2021

Description

Hello!
This auction is for 4 complete sheets of our Solar System themed Forever, Self-Adhesive USPS issued Postage stamps. All sheets contain descriptive text on the back (see above). These stamps are valid for any class of mail including letter, package and flat rate product. These sheets are:
Scott # 5607c--Sun Science--Pane of 20 (10 different) issued in 2021. This sheet was made with reflective foil that changes color as the light angle changes. These stamps highlight the sun's activity.
Scott #5076a---Views of Our Planets--Pane of 16 (8 different) issued in 2016.
Scott # 5078a--Pluto--EXPLORED!--Sheetlet of 4 (2 different designs) issued in 2016. These highlight images of Pluto and the New Horizons spacecraft.
Scott #5211--Total Solar Eclipse--Pane of 20 produced in 2017. These were made using a thermochromic disc at the center of each stamp. When the warmth of your finger is placed on the disc, the MOON APPEARS! (see above).
These sheets are self-Adhesive, on their original backing paper, mint, never hinged and fault-free. They will be shipped FREE, packed between stiff pieces of cardboard to prevent damage that could occur with USPS handling.
I am a 20 year member of the APS
Thanks for looking!