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<p>[QUOTE="Julius Germanicus, post: 3676302, member: 80783"]Thank you all for your thoughts!</p><p><br /></p><p>This is what Moruzzi sais about the parameters for their grading:</p><p><a href="https://shop.moruzzi.it/en/info.html#rarita" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://shop.moruzzi.it/en/info.html#rarita" rel="nofollow">https://shop.moruzzi.it/en/info.html#rarita</a></p><p><br /></p><p>For example:</p><p><br /></p><p><b>Grade:</b><i> "We use the European system of grading for our coins, ranging from VG (Very Good) to BU (Brilliant Uncirculated)"</i></p><p><br /></p><p>The OP coin´s grade, "very fine" is described as "Moderate wear with about 75% of detail visible" (F would be 50 %, EF 95%)</p><p>The 45 out of 70 grade translates to roughly 65%. This doesn´t make much sense to me. Shouldn´t a "good VF" be closer to EF than to F? Or is this common practice with modern coins?</p><p><br /></p><p><b>Rarity:</b> <i>"...spanning from a low percentage for very common or common coins (C) to 100% for extremely rare ones, uniques or known in few specimens (RRRRR)".</i></p><p><br /></p><p>I would call the OP coin either "not common" (for a Sestertius, that is), if we only look at at the subtype RIC 795 , or "common", if we include the other CONCORD varieties (there must be a couple of hundred specimens around).</p><p>If the OP coin´s 30 out of 100 rarity grade corresponds with either of those, I wonder what the rating for a R, RR, RRR, or RRRR coin would be and if this would be measured differently for modern coins.</p><p><br /></p><p>Here is yet another Sestertius from the same obverse die (but a third reverse):</p><p>[ATTACH=full]987418[/ATTACH] </p><p><br /></p><p><b>Metal and Patina:</b> </p><p><i>"... coins with a metal without particular issues will receive a really high rating in the histogram".</i></p><p><i>"The original old patinas, like the green or riverine ones on the Roman bronze coins, attract the collectors. (...). If an original patina is presented on a coin, we’ll report it in the data sheet resulting in a high rating in the histogram too."</i></p><p><br /></p><p>Neither the metal flaw on the reverse of the OP coin, nor the (riverine or cleaned?) surfaces are mentioned, so we cannot understand just how these attributes led to a rating of 75 out of 100. </p><p><br /></p><p><b>Style:</b></p><p><i>"Coins with a coarse style will receive a low rating in the histogram. Otherwise coins with a fine style will receive an higher evaluation up to the maximum for the most artistic ones."</i></p><p><i><br /></i></p><p>90 out of 100 makes sense for an elegant portrait, which this probably is if Sear and Moruzzi agree on that (100 may be reserved for the works of those rare "master engravers"). </p><p> </p><p><b>Coinage:</b></p><p><i>"... exemplars with damaged flan, not centered and with low reliefs will receive a lower rating."</i></p><p><br /></p><p>Ah, this is indeed what is called "strike" by NGC. While NGC has five gradations, Moruzzi´s 5%-steps gives a possible array of no less than 20!</p><p>The OP coin´s obverse is struck as perfect as it gets for ancient coins as I would say, but the (metal) flaw on the reverse and a few letters being partly off the flan may explain the 90 out of 100 rating here.</p><p><br /></p><p><b>Provenance:</b></p><p><i>"A coin with an old provenance, sold in prestigious auctions (...) or displayed in important collections (...), will receive an higher percentage in the histogram than another one with a more recent or less prestrigious pedigree.</i></p><p><i>Naturally, it’s not always possible to report the provenance of a coin due to the Privacy Laws, but we remark that all the coins offered by Moruzzi Numismatica have an absolutely legal provenance registered in the Italian authorities’ lists."</i></p><p><br /></p><p>All of Moruzzi´s coins have a minimum provenance of 60 out of 100, just like the OP coin that comes with no pedigree. It may have a legal provenance that the seller knows about, but what help is that to the buyer/collector ?????? It looks like they claim that just by being sold by Moruzzi alone a coin has a substantial bonus in value.</p><p><br /></p><p>What sense does a system of 20 possible (but nevertheless often subjective) gradations in six categories make, for ancients and in general? Could this succeed and eventually have an effect on NGC´s system?[/QUOTE]</p><p><br /></p>
[QUOTE="Julius Germanicus, post: 3676302, member: 80783"]Thank you all for your thoughts! This is what Moruzzi sais about the parameters for their grading: [URL]https://shop.moruzzi.it/en/info.html#rarita[/URL] For example: [B]Grade:[/B][I] "We use the European system of grading for our coins, ranging from VG (Very Good) to BU (Brilliant Uncirculated)"[/I] The OP coin´s grade, "very fine" is described as "Moderate wear with about 75% of detail visible" (F would be 50 %, EF 95%) The 45 out of 70 grade translates to roughly 65%. This doesn´t make much sense to me. Shouldn´t a "good VF" be closer to EF than to F? Or is this common practice with modern coins? [B]Rarity:[/B] [I]"...spanning from a low percentage for very common or common coins (C) to 100% for extremely rare ones, uniques or known in few specimens (RRRRR)".[/I] I would call the OP coin either "not common" (for a Sestertius, that is), if we only look at at the subtype RIC 795 , or "common", if we include the other CONCORD varieties (there must be a couple of hundred specimens around). If the OP coin´s 30 out of 100 rarity grade corresponds with either of those, I wonder what the rating for a R, RR, RRR, or RRRR coin would be and if this would be measured differently for modern coins. Here is yet another Sestertius from the same obverse die (but a third reverse): [ATTACH=full]987418[/ATTACH] [B]Metal and Patina:[/B] [I]"... coins with a metal without particular issues will receive a really high rating in the histogram". "The original old patinas, like the green or riverine ones on the Roman bronze coins, attract the collectors. (...). If an original patina is presented on a coin, we’ll report it in the data sheet resulting in a high rating in the histogram too."[/I] Neither the metal flaw on the reverse of the OP coin, nor the (riverine or cleaned?) surfaces are mentioned, so we cannot understand just how these attributes led to a rating of 75 out of 100. [B]Style:[/B] [I]"Coins with a coarse style will receive a low rating in the histogram. Otherwise coins with a fine style will receive an higher evaluation up to the maximum for the most artistic ones." [/I] 90 out of 100 makes sense for an elegant portrait, which this probably is if Sear and Moruzzi agree on that (100 may be reserved for the works of those rare "master engravers"). [B]Coinage:[/B] [I]"... exemplars with damaged flan, not centered and with low reliefs will receive a lower rating."[/I] Ah, this is indeed what is called "strike" by NGC. While NGC has five gradations, Moruzzi´s 5%-steps gives a possible array of no less than 20! The OP coin´s obverse is struck as perfect as it gets for ancient coins as I would say, but the (metal) flaw on the reverse and a few letters being partly off the flan may explain the 90 out of 100 rating here. [B]Provenance:[/B] [I]"A coin with an old provenance, sold in prestigious auctions (...) or displayed in important collections (...), will receive an higher percentage in the histogram than another one with a more recent or less prestrigious pedigree. Naturally, it’s not always possible to report the provenance of a coin due to the Privacy Laws, but we remark that all the coins offered by Moruzzi Numismatica have an absolutely legal provenance registered in the Italian authorities’ lists."[/I] All of Moruzzi´s coins have a minimum provenance of 60 out of 100, just like the OP coin that comes with no pedigree. It may have a legal provenance that the seller knows about, but what help is that to the buyer/collector ?????? It looks like they claim that just by being sold by Moruzzi alone a coin has a substantial bonus in value. What sense does a system of 20 possible (but nevertheless often subjective) gradations in six categories make, for ancients and in general? Could this succeed and eventually have an effect on NGC´s system?[/QUOTE]
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