1801 8 Reales Mexico

to the CCF!

to CCF
This coin is from Guatemala, not Mexico
https://en.numista.com/catalogue/pieces17227.html

FTJR

You are right the coin bears the Mexico City mint mark.

The chop marks may be genuine but they are never absolute proof since they have been placed on forged coins for as long as forgeries have been made.

Earlier tonight I replied to another Mo 8R dated 1798. With the exception of my comments about surface texture of that coin, what I said applies to this one.

Even if it tests at 90% silver it may be a silver CCC made for China trade between 1820 and 1930.

You can also read my old posts on edging to learn how these coins were edged BEFORE the coin was struck. That can account for flattened circles between the rectangles on the colonial edge.

Make sure the coin has two overlaps in the edge design 180 degrees apart of the same length. One overlap is fake, three or more would be fake. Laps of different lengths also means fake. Fake could be CCC or NF.

Density should be 10.3 regardless of weight. There are posts on density as well. Take care this series when tested with XRF proves that there are about as many fakes as genuine coins on the market.

So you have a 50% chance of being correct at this point.