Postal card with reverse stamps

My Grandfather was a postman in Brookston, Indiana after WW11. He collected stamps & things dated before & after the War. I'm not exactly sure what this is. Can anyone help me? The card appears to have an error of being stamped close to the edge.

 

That is close to edge, But what is interesting, is that it looks to be used as a multi delivery use like a postal wrapper to deliver multi-pal pamphlets. If you ever interested in selling it contact me. Thank you Ux27c Dark green Die 1 shifted to the right. It is also shifted up, I was comparing it with my collection of UX27 cards.

 

A pair of Ux 27

 

Thanks

 

How much is this worth how do I contact you Richard Babcock via email

 

Babcock2000@hotmail.com. You can contact christies auction house or heritage auction house to find out value but you might need a APS certification

 

How do I go about getting the aps certification?

 

How do I contact these places

 

And thanks for your help.

 

Hey Richard Babcock mine is ux27c dark green die 1 right.

 

Very interesting thing for Notaphily collectors.

 

Just wondering how is my postage card with reverse stamps related to notaphily

 

I have new information. His daughter, my Grandma, used this postcard personally in the early 1950s. Just to let everyone know

 

Im wondering if it was cut down because it was attached to something like a parcel tag!

 

What experts said the cancelation is clearly a unique piece as i understand

 

I think Richard is right:
The card was cut off on its right side.The use of a ruler will prove that
easily.

 

Kelleher Auctions said it is unique piece also to let everyone know

 

Sorry i meant for the cancelation