A Couple Of New 8 Reales Additions (Neat Error)

I'm getting ready to move into a new house, so my SG scale is already packed. The weight of the Zacatecas piece is 26.91g with edge overlaps at 1 and 7 o'clock.

Edited to add pictures of the edge overlaps:

I agree with jfransch the 1821 no mouth is always a suspect and this coin has some of the traits of a Boston style forgery.

The bullion fakes (Boston types) are noted for die cutting errors - wrong dates (like 1294 or 1872 or 1896 all Charles IIII), wrong associations die to die (mules of incorrect designs), spelling errors and position elements like the misplaced s. But they will be full weight correct assay silver - that is why they escape detection and were used for so long in China. Many "returning" Boston's come from China so we can attach blame to the wrong party (in a few cases).

SG would detect a fraud - a low silver alloy but that would move this coin to the normal Counterfeit category.

I would like to know the SG here.

I am glad the coin certified. That is good for you and your investment.

Unfortunately it is not a guarantee that the coin was not made in the 1880's. The "Boston" style coins were in some instances made so well that they DO pass as real. That is what makes them soooooo interesting as a group.

The proof I offer is of course the Micro O US dollars that certified for years until a group was submitted simultaneously and a grader noted an impossible die match. That was just DUMB LUCK that resulted in those forgeries being spotted.

On page 727 of the Second volume of Calbetto's work is a very interesting note;

Had a chance to perform SG before sending it back for a reholder and it tested 10.3

Bob, what I'm failing to understand is why would someone bother counterfeit a coin using correct amount of silver in the process?

TK, it is because you could buy the silver needed to make the bustman dollar for less than $1 and the Bustman coins actually carried a premium (up to 8% according to the book "Crime of 73" by Robert Van Ryzin) over a US dollar because of their demand for trade in the Orient. Silver was flooding the markets as the Comstock and other major silver finds were ramping up production. The US Trade dollar made its appearance to try and compete but was unsuccessful and the Morgan dollars that followed starting in 1878 were really minted as a government subsidy to the Western Silver interests, there was no need in commerce for the hundreds of millions of Morgan dollars that were minted, they were just struck, bagged and stored away in the treasury buildings.