1861 Scott 85-D 10c Green Z Grill ? Help

a new image with the pencil technique much more livable probably f

I get 11x16 which makes it an F grill, Scott 96.

quigngt, That isn't what I am saying. All Z grills must have 18 horizontal rows, no matter what stamp it is on.

observing from this link http://www.jamesdire.net/grill.html the morphology of the oblique lines of the grid seems to correspond to a z but not an expert so I'll leave you a decision

You are correct sinclair2010. I use theswedishtiger website for details on lots of stamps. It is on this web page that follows (at the end) that the owner of the site contradicts himself on the Z Grill page. At the very top he shows a Z grill that states they have 15-17 horizontal points. Yesterday I simply scrolled down to 85D that indicated it has 18 points. In my haste I did not check the other Zs and assumed that horizontal points varied. So, again thanks for forcing me to be more careful. If you have not seen the webpage with the error and want to, here it is: http://www.theswedishtiger.com/x1867b.htm