Owner Comments:
A few very nice 1910 Dineros were saved (most graded are Gem), but they come on the market very infrequently. Semi-PL fields are the norm, especially on the reverse. While this may seem like a common date, at the time of this writing, there are 17 1910 1/2 Dineros on ebay, with just one badly damaged 1910 Dinero listed.
Flatt reports that all 1910 Dineros have FG/JF with a period under the "O" of DINO (placement can vary). Flatt is not correct. My specimen has no period, and I have seen an example lacking under-lettering. Krause adds an FG/JG. The catalog gives a 10.25 price boost for the FG/JF and FG/JG, but these are not justified in today's market, especially when most 1907-1916 Dineros have under-lettering.
My coin is tied with one other MS 66 1910 at NGC for top graded. However, it is the top graded for the FG/JF designation. NGC also has one MS 63 and three other 1910's in MS 65. PCGS has a one more in MS 65, and an FG/JF and FG/JG, both in 55.
The set specimen is literally perfect. I can not find a solitary contact mark on this coin. The devices are frosted, and the fields are a rare alluring mixture of both satin and reflective luster. Thus said, I was surprised when I got this coin back as an MS 66, without even a plus. I was expecting MS 67 at least. I guess they wanted a bit more "pop" in the fully original luster? For all those who say NGC overgrades, this time they certainly did not. FG/JF, no period.