messydesk

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    varslab.com
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    VAMs, photography

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  1. Don't confuse soft strike with detail not present on the die. The reason many Peace dollars are mushy is because the dies are mushy, so that even if the coin is fully struck, you get fully struck mush. 1921-S Morgans work the same way, in that you almost never see one that is sharply detailed. The 1921 high relief is a different beast. The reason they don't have good detail is because the strike isn't sufficient to bring it up.
  2. As far as I know, NGC was not producing calendars. I made some calendars of my coin photography, but I'm sold out of the 2021.
  3. In the be careful what you wish for department, let's use this opportunity of the ASE reverse switchover to have all mints make ASEs of both reverses, and in bullion, "burnished", "enhanced", proof, and reverse proof finishes. No colorized, holographic, privy marked stuff. They can scatter them over the course of the year to hide the fact that there would be 40, count 'em, 40 different ASEs made. Heaven help TPG label collectors that may have to buy hundreds of 2021 ASEs. My Dansco, in which I keep bullion ASEs, only holds 36 -- 1986-2021. Bottom line is that a ballooning product catalog isn't really all that good for the hobby.
  4. 1921-D Morgans exist in PL, but they are quire scarce.
  5. Agree that the 78-CC is good (VAM 6). The 89-CC has a lot not to like -- rims, detail, date and mint mark position, heavy clash on the reverse, and that's just from a blurry picture.
  6. AI grading is an interesting exercise, because it shows just how much you need to understand something to build an AI system that can do it well. This is a good example of a classifier problem, where the classifications are the grades of a coin. A standard approach to this is to throw a lot of image data together with ground truth grades (I know what you're thinking) and let the system learn how to classify unknown images. This will work pretty well with wholesome, circulated coins with flat appearances that can be graded pretty much as line drawings and imaged on a flatbed scanner with repeatable results. Uncirculated coins pose a different challenge. If you look at how people grade them, there is a lot of tipping and twirling of a coin in the light to get a full picture of what it looks like. If you translate that process to a computer, that is an incredible amount of data that needs to be acquired, and acquired without loss due to an insufficient imaging setup. We've all seen countless GTG threads everywhere that have unexpected grades associated with a coin. We are grading these with one image. Sometimes they're good images, sometimes not, but it's always that case that a single image isn't capturing everything about a coin. More nefariously, it's sometimes the case that a single image is hiding specific things about a coin, such as a patch of hairlines, a bad hit, or a scratch. If I'm trying to rip of eBay buyers and I normally use bad (for example, overexposed) pictures of problem coins to do this, knowing there's an AI grader in play, I might decide to try and game that with my photos. To me, what would be the most impressive is a data acquisition system that could acquire the data necessary to train such a system well and then to actually perform the grading on test coins. From there, the next step would be to see how to optimize the whole process. Simpler AI tasks related to coins include identification, coarse grained attribution (think Overton varieties, not VAMs), and maybe even AT/NT assessment.
  7. Just saw a that DeSantis issued a statewide stay-at-home order. Should I assume that the offices will be closed after the end of the day today?
  8. I don't know that the mint director actually "dug up" this figure as much as he wet-finger estimated it. The 7/8 TF and 7 TF reverses were phased in during late March and early April 1878, and there were some 7 TF coins that were made before 8 TF coins that used the same obverse die. I've estimated that the mintage of 8TF is about 1,280,000 based on die studies and mint correspondence, which is just as far away from his estimate as the 750,000 figure that has been in the Red Book for a long time. A previous estimate, made in the late 1950s or early 1960s, was 580,000.
  9. So is the regulation as stated because the obverse was always the dated side? Was there another regulation or law saying that the obverse side show the date?
  10. 1900 is the generally accepted "date" of the coin. The Norfolk half has 5 dates strewn about it, none of which were when the coin was issued.
  11. I wonder if there is a "case file" that goes along with this. Otherwise I could imagine Superintendent Fox asking for further details, including why there was a fire in the Seperating [sic] room.
  12. Now taking orders for my 2020 coin calendar. $16 (includes shipping in the US) gets you a wall calendar with a different coin photo that I've taken for each month. The calendar is printed on heavy card stock with glossy pictures of a diverse assortment of eye candy. This is the twelfth year I have done this calendar. Should be shipping by December 1 or so. Here are the coins that are featured for this year: