How do I tell the age?

Pinkie and Blue Boy. Given frames, I'd think they both dated to the 1960s. They were very widely reproduced then and hung in many a child's bedroom.

https://en.wikipedia.org/wiki/Pinkie_(painting)

https://en.wikipedia.org/wiki/The_Blue_Boy

Debora

 

Hi,
Watch some "Leave it Beaver" on TV. They are predominantly hanging on either side of the front door.
greg

 

That's what I was looking for, I know they're not worth 8 million dollars, just wanted to pinpoint an era. Thank you

 

Not surprised. They were ubiquitous in the late 1950s/early 1960s.

Debora