Fathers Collection From Poland

I don't know much about stamps and my father who was polish gave me his entire collection. There is about a book and a half worth of stamps. One that I found interesting is a complete sheet of sputnik/explorer 1 full sheet with an certificate. If anyone could help me see if I have anything cool here and estimate of the value? Thank you!


Here's a link to all the stamps:

https://gofile.io/d/OTjoGT

Great little starter collection. Some mint from 80's, the used majority look to be cancelled to order, to sell to collectors, judging by the corner cancellations, used to cancel 4 at a time; and probably still would have gum on back. I did not check them all but most appear regularly with no great value, but great for starter.
As for the souvenir sheet- listed in Scott catalogue- 1977 Dec 28 # 2248a Souvenir sheet of 6 catalogue value $2.40

States- 20 years of space conquest. No 2248a contains 6 # 2248 (2 tete-beche pairs), and 2 labels, one showing Sputnik1 and "4.x.1957," the other Explorer 1 and "31.1.1958."

For clarity- Tete-beche means the same stamps side by side but turned 180* the opposite way.

There's also some stamps from the prewar period.

Nice streamlined steam loco on a 1 zloty stamp- very Art Deco! Polish film poster design from the Communist period has a really high reputation- the designers were allowed a lot of freedom.

To the point, very common Polish stamps with minimal retail value. If you don't collect and don't intend to collect you could donate them to a child who is interested.