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<p>[QUOTE="Justin Lee, post: 3551025, member: 87404"]I deny any deep knowledge or specific understanding on this "either-or" of metallurgy in Alexandrian tets, but have been part of and viewer of similar discussions here.</p><p><br /></p><p>Here are a couple links to previous discussions on this topic of billion vs potin tetradrachms (and other examples of these coins by other CTers).</p><p><br /></p><p><b>Got A Potin?</b></p><p><a href="https://www.cointalk.com/threads/got-a-potin.285433/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/got-a-potin.285433/">https://www.cointalk.com/threads/got-a-potin.285433/</a></p><p><br /></p><p><b>Billon Comes in Many Colors</b></p><p><a href="https://www.cointalk.com/threads/billon-comes-in-many-colors.296020/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/billon-comes-in-many-colors.296020/">https://www.cointalk.com/threads/billon-comes-in-many-colors.296020/</a></p><p><br /></p><p><b>Unexpected Groupings appearing in my Collection: </b></p><p><b><b>Alexandrian Billion/Potin Tetradrachms</b></b></p><p><a href="https://www.cointalk.com/threads/unexpected-groupings-appearing-in-my-collection.320061/#post-3147821" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/unexpected-groupings-appearing-in-my-collection.320061/#post-3147821">https://www.cointalk.com/threads/unexpected-groupings-appearing-in-my-collection.320061/#post-3147821</a></p><p><br /></p><p><b><i>**And nice Probus!**</i></b> A great emperor to collect Alex tets of! One of my favorite tets from this era is a Probus as well:</p><p><img src="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190209_105659006.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><b>Probus, Ruled 276-282 AD</b></p><p><b>AE20 Tetradrachm, Alexandria, Egypt</b></p><p><b>Struck Year 4, 278-279 AD</b></p><p><b>Obverse</b>: A K M AVP ΠPOBOC CЄB, Laureate and cuirassed bust right.</p><p><b>Reverse</b>: Eirene holding olive branch and sceptre, LΔ to right (RY 4 = 278/279 AD)</p><p><b>References</b>: Emmett 3986.4, R1</p><p><b>Size</b>: 20.2mm, 7.9g</p><p><b>Ex</b>: <i>The Reverend Willis McGill Collection</i> (McGill was an American missionary stationed in Egypt, who started collecting there during World War I)</p><p><i>[Original collector’s envelope has incorrect attribution.]</i></p><p><br /></p><p>And here is a Claudius II, whom was the "starting" emperor of potin that the article mentioned:</p><p><img src="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20181223_181659666.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><b>Claudius II Gothicus, Ruled 268-270 AD</b></p><p><b>AE Tetradrachm, Egypt, Alexandria</b></p><p><b>Struck 269/270 AD</b></p><p><b>Obverse</b>: AVT K KΛAVΔIOC CEB, laureate and draped bust right.</p><p><b>Reverse</b>: Eagle standing right, head left, holding wreath in beak; date L-B across field, RY 2.</p><p><b>References</b>: Dattari 5415 var</p><p><b>Size</b>: 20mm, 7.2 g</p><p><br /></p><p>And a Gallienus, the emperor just before him:</p><p><a href="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg" rel="nofollow"><img src="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg?w=723" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></a></p><p><b>Gallienus, Ruled 253-268 AD</b></p><p><b>AE Tetradrachm, Egypt, Alexandria</b></p><p><b>Struck 262/263 AD</b></p><p><b>Obverse</b>: AYT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right.</p><p><b>Reverse</b>: Eagle standing left, head right, holding wreath in beak; before, palm; behind, LI, RY 10.</p><p><b>References</b>: Emmett 3806, Dattari 5276</p><p><b>Size</b>: 23mm, 11.9g</p><p><br /></p><p>What are noticeable differences in the metal? In the fabric of the coin? The size and weight? (other Gallienus coins later in his reign tend to get smaller) So where is that cut off? I don't claim to have a clue... I enjoy the coins though and their label of billon or potin doesn't effect that for me. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Justin Lee, post: 3551025, member: 87404"]I deny any deep knowledge or specific understanding on this "either-or" of metallurgy in Alexandrian tets, but have been part of and viewer of similar discussions here. Here are a couple links to previous discussions on this topic of billion vs potin tetradrachms (and other examples of these coins by other CTers). [B]Got A Potin?[/B] [url]https://www.cointalk.com/threads/got-a-potin.285433/[/url] [B]Billon Comes in Many Colors[/B] [url]https://www.cointalk.com/threads/billon-comes-in-many-colors.296020/[/url] [B]Unexpected Groupings appearing in my Collection: [B]Alexandrian Billion/Potin Tetradrachms[/B][/B] [url]https://www.cointalk.com/threads/unexpected-groupings-appearing-in-my-collection.320061/#post-3147821[/url] [B][I]**And nice Probus!**[/I][/B] A great emperor to collect Alex tets of! One of my favorite tets from this era is a Probus as well: [IMG]https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190209_105659006.jpg[/IMG] [B]Probus, Ruled 276-282 AD AE20 Tetradrachm, Alexandria, Egypt Struck Year 4, 278-279 AD Obverse[/B]: A K M AVP ΠPOBOC CЄB, Laureate and cuirassed bust right. [B]Reverse[/B]: Eirene holding olive branch and sceptre, LΔ to right (RY 4 = 278/279 AD) [B]References[/B]: Emmett 3986.4, R1 [B]Size[/B]: 20.2mm, 7.9g [B]Ex[/B]: [I]The Reverend Willis McGill Collection[/I] (McGill was an American missionary stationed in Egypt, who started collecting there during World War I) [I][Original collector’s envelope has incorrect attribution.][/I] And here is a Claudius II, whom was the "starting" emperor of potin that the article mentioned: [IMG]https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20181223_181659666.jpg[/IMG] [B]Claudius II Gothicus, Ruled 268-270 AD AE Tetradrachm, Egypt, Alexandria Struck 269/270 AD Obverse[/B]: AVT K KΛAVΔIOC CEB, laureate and draped bust right. [B]Reverse[/B]: Eagle standing right, head left, holding wreath in beak; date L-B across field, RY 2. [B]References[/B]: Dattari 5415 var [B]Size[/B]: 20mm, 7.2 g And a Gallienus, the emperor just before him: [URL='https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg'][IMG]https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg?w=723[/IMG][/URL] [B]Gallienus, Ruled 253-268 AD AE Tetradrachm, Egypt, Alexandria Struck 262/263 AD Obverse[/B]: AYT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right. [B]Reverse[/B]: Eagle standing left, head right, holding wreath in beak; before, palm; behind, LI, RY 10. [B]References[/B]: Emmett 3806, Dattari 5276 [B]Size[/B]: 23mm, 11.9g What are noticeable differences in the metal? In the fabric of the coin? The size and weight? (other Gallienus coins later in his reign tend to get smaller) So where is that cut off? I don't claim to have a clue... I enjoy the coins though and their label of billon or potin doesn't effect that for me. :)[/QUOTE]
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