24 Cent 1861 Scott N.70 Identification Color

Good morning
24 cents 1861 color identification
thank you

greetings SImone

I personally think this is one of the hardest distinctions even Among experts. I have seen what is offered as steel blue having a mild greenish hue and some that look like they have been bleached. You can find examples that clearly fit the standard 24 cent colors : red lilac, brown lilac and violet. I have also seen stamps with a xixture of steel blue and violet on the same stamp suggesting a color changeling in progress. I also have 3 certified 78c's; two certified by PSE and one certified by both PF and PSE; in none of these stamps do I see blackish violet the way Scott 45 clearly shows this combined color.

Finally, the hardest shade, in my opinion only, is 70d which in my mind I think of when I wonder if the stamp is a weak shade of 70b or 70c, but I really feel is neither.

Stamp on right is toned (note paper color). Determining the 1861 24 cent color can be challenging (fugitive ink), on a toned stamp it becomes even more difficult.
Don