Friend just gave me these
A little different being European Ammo

I'd be curious what an accurate caliper says about the bullet diameter on those..., GREAT GIFT!

Any idea how old they might be?

Only just got them
So a lot of research to do

Just found a conversion
Projectile 4.65 grams is approx 72 grain

Just put the vernier over the projectile at the case neck
read .2215 inch
The early Winchester I post in an earlier thread
read .2235 inch

A Search on the net turned up the following
After WW2 and being taken over by the Nazi the Czech factory was taken back and Nationalized to
Povazske Strojarne and the head stamp became PS after 1946
but unable to find what period this style of packet was made
I'm leaning toward the 60s-70s period

Povaske Strojarne produced sporting ammunition from c1948 until 1954.
Now I know more than I did a couple of hours ago