Today's theme is inventions, and I think innovations. loosely fits this theme.
This set was issued by USPS in 2020, and covers the modern marvels of computing, biomedicine, genome sequencing, robotics and solar technology.
The stamps have a foil effect which makes them quite attractive, yet also obscures the image somewhat. They are also hard to photograph!
You can see non-reflective version here: Innovation
I sent an envelope for a first day of issue pictorial cancellation to Eva (image from her blog).
For more stamps featuring inventions, explore the links at See it on a Postcard.







