3 Cents. 1851 Identification Colour And Plate

Good morning

I can't identify the color and the plate of this 3 cent.

I thank you and greet Simone

It is not from an "orange-brown" plate or an "inner line" plate, so must be from plate 4,6,7 or 8: Scott #11. Most of the frame lines are missing, so probably can't be plated. It doesn't have the typical top label recut of plate 4, so I'd guess plate 6, 7 or maybe 8, all of which exist in that color.

It is a Scott number 10 or 11. Check this link for colors. https://www.uspcs.org/stamps-covers...-11-and-11a/

Since computer monitors vary in color display, the link is for general comparison only. You would need to send it to an expertizing service familiar with this issue to verify the color.

There is essentially zero chance that the stamp is a Scott #10. If I were going to try to plate the stamp, which I am not going to do, I would start at Plate 8, then go through Plates 6 & 7. I do think there is a chance the stamp can be plated. It is highly likely that the stamp was printed in the second half of 1856 in a '56 brownish carmine. The color is slightly darkened by atmospheric pollutants.

Introductory:
https://www.uspcs.org/stamps-covers...51-3c-issue/
Plating:
http://www.stampsmarter.com/feature...Plating.html

Thanks a lot the classification of the position, I try to classify according to the sites