1851 1c Fanklin - Genuine?

I am not yet very experienced with the early stamps. What about this one? Which Scott type is it? Does it look genuine? Thank you in advance

Scott #9, Ty IV, recut once at top, not recut at bottom.
Appears perfectly genuine.

I can hardly believe it because I got a 2nd one with a practically alike postmark.

You can read a little more about these stamps here, if you want to -

https://stampsmarter.org/features/S...Plating.html

I really appreciate your advice, txstamp Thank you very much.

It looks like the bottom of the left stamp matches the top of the right stamp. The red postmarks match up nicely, too.

Those are nice cancellations! The black is a standard 7-bar closed gridiron - the most common obliterator of the era. The red is a packet steamer cancel. I believe these are a pair that were originally on the same transatlantic cover. I can't make out all of the red cancellation - perhaps someone could use some software to make the red stand out (or maybe someone has better eyes than me) to tell whether this is a British, American, or other packet cancellation. I can barely make out a "K" on the bottom stamp, so my guess it that it is a New York British or American packet cancellation. These cancellations add a few dollar premium price to the stamps.

Correct. The red is a credit to Britain.

edit: these are called exchange markings, applied at the foreign mail desk at the NYC PO. They were for purposes of accounting as part of the US British postal treaty , effective 1849

The two match as Germania says. BTW they came together as part of a larger lot bought in Germany.