US Postcard Pc1 Dated "Dec 1 1873" - Traces Of Doubling?

Good Morning All,

I have a US PC1 postcard dated Dec 1 1873. I was looking all around it and found markings that to a regular stamp collector would appear to be doubling. However, postcards are a different animal - so I'm looking for the forums input please. Have a look, let me know what you think. Also, I could use a resource please :)

Thanks

The source I go to first for UX1 and UX3 is Charles Fricke's 70 page booklet:



The quality control for printing UX1 and UX3 was very poor. The plate suffered damage such that Fricke was able to identify constant flaws, progressive damage, and repairs to each of the 72 plate positions. Your card is from subject position 64 (SP-64). Here are 3 additional examples of SP-64 (on UX3) showing:
1. nick in top line of "e" of states.
2. very weak top line of last "s" of states.
3. dent into upper left of "C" of card.
4. some extra lines outside the scalloped "U.S.", which Fricke notes do not show on later printings, and these three cards show considerable variance.



True doubling typically shifts all in the same direction.

Thank you John. So if I have markings at the top and bottom what is that an indication of? May need to take another look myself or a better scan. Thank you for the resource mention.

The second card that John shows also has the extra line at the top, just like yours.