Stamp, 10 Cent Jefferson, With Grill, Imperforated, Scott #?

Hello,

could someone help me with this stamp?

It is with a secret mark, could it be a #161c, but imperforated? I can´t find this in the Scott catalogue.

What do you think?

Thanks for your help and opinions!

again....trimmed

Grill is fake and on the wrong design. Note the secret mark at upper right, that says it is a Continental or later printing. The grilled issues were printed by the National Bank Note Co. Most likely a Scott number 161 or possibly a Scott 188. Corner margin singles with very large margins are often trimmed to appear imperforate. Typically the left or right vertical sides have a natural straight edge and the balance of the sides have their perforations trimmed away.
The fact that it was cut close at the bottom says take a closer look. You may even be able to find tiny nicks on the edge which are the bottom of the original perforation holes. Your 1 cent stamp had several tiny indentations that could be the remnant of the original perforation holes.

Micarelli has a footnote for Scott 161 that indicates a few were produced with an experimental J (7x9.5 mm) grill. He also notes that these were considered essays. But in their essay section, Scott makes no mention of imperforates for 161-E1. Don't know if this helps but thought it worth mentioning.
Added: Have to agree with the others ... trimmed.

The only Continental grill essays Scott lists in the essay section are grill samples without a printed design. They are given the Scott number 79-E16 and placed back with all the other grill essays which preceded them in 1867. Those which were printed with designs are listed as sub-varieties of the issued stamps from the Continental Bank Note Company 156-166 and 178-179.