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<p>[QUOTE="Justin Lee, post: 4849072, member: 87404"]Very nice Gallienus tet! Are you referring to the green around the edges within the little crevices? I really don't see much on the obverse or reverse, just a tad in the tiny areas. This verdigris is not uncommon in the textured edges of the Alexandrian tet fabric, or on high bronze content tets later in the empire. This is different than bronze disease and what I'm seeing is nothing that I'd personally be concerned about. Bronze disease, when active, creates a white powder that can easily come off with some poking... These green verdigris instead should be hard. Are you seeing it grow at all? I would doubt it as I'd suspect it formed in the environment prior to its discovery (unless you are recreating an environment like that).</p><p><br /></p><p>In honor of your coin, here are some of my favorite Gallienus tets:</p><p><br /></p><p><img src="https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><font size="3"><b>Gallienus, Ruled 253-268 AD</b></font></p><p><font size="3"><b>AE Tetradrachm, Egypt, Alexandria</b></font></p><p><font size="3"><b>Struck 262/263 AD</b></font></p><p><font size="3">Obverse: AYT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right.</font></p><p><font size="3">Reverse: Eagle standing left, head right, holding wreath in beak; before, palm; behind, LI, RY 10.</font></p><p><font size="3">References: Emmett 3806, Dattari 5276</font></p><p><font size="3">Size: 23mm, 11.9g</font></p><p><br /></p><p><img src="https://iomegacollectionhome.files.wordpress.com/2019/06/collagemaker_20190611_214303169.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><font size="3"><b>Gallienus, Ruled 253-268 AD</b></font></p><p><font size="3"><b>BL Tetradrachm, Egypt, Alexandria</b></font></p><p><font size="3"><b>Struck 261/262 AD</b></font></p><p><font size="3">Obverse: AVT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right, seen from front, slight drapery on left shoulder.</font></p><p><font size="3">Reverse: Eagle standing left, holding wreath in beak, palm over shoulder, ENATOV to left and L to right (year 9=261/262 AD).</font></p><p><font size="3">References: Emmett 3802, Dattari 5286, Köln 2908</font></p><p><br /></p><p><img src="https://iomegacollectionhome.files.wordpress.com/2020/04/incollage_20200416_204218115.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><font size="3"><b>Gallienus, Ruled 253-268 AD</b></font></p><p><font size="3"><b>BL Tetradrachm, Egypt, Alexandria</b></font></p><p><font size="3"><b>Struck 263/264 AD</b></font></p><p><font size="3">Obverse: AVT K Π ΛIK ΓAΛΛIHNOC CЄB, laureate, draped and cuirassed bust right.</font></p><p><font size="3">Reverse: Tyche standing left, holding rudder and cornucopiae; L IA (retrograde) in left field, RY 11.</font></p><p><font size="3">References: Emmett 3836, Dattari 5267</font></p><p><font size="3">Size: 24mm, 9.69g</font></p><p><font size="3"><i>Notes: Fascinating retrograde date.</i></font></p><p><i><br /></i></p><p><i><img src="https://iomegacollectionhome.files.wordpress.com/2020/08/incollage_20200809_191919992-1.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </i>[/QUOTE]</p><p><br /></p>
[QUOTE="Justin Lee, post: 4849072, member: 87404"]Very nice Gallienus tet! Are you referring to the green around the edges within the little crevices? I really don't see much on the obverse or reverse, just a tad in the tiny areas. This verdigris is not uncommon in the textured edges of the Alexandrian tet fabric, or on high bronze content tets later in the empire. This is different than bronze disease and what I'm seeing is nothing that I'd personally be concerned about. Bronze disease, when active, creates a white powder that can easily come off with some poking... These green verdigris instead should be hard. Are you seeing it grow at all? I would doubt it as I'd suspect it formed in the environment prior to its discovery (unless you are recreating an environment like that). In honor of your coin, here are some of my favorite Gallienus tets: [IMG]https://iomegacollectionhome.files.wordpress.com/2019/04/collagemaker_20190310_151645196.jpg[/IMG] [SIZE=3][B]Gallienus, Ruled 253-268 AD AE Tetradrachm, Egypt, Alexandria Struck 262/263 AD[/B] Obverse: AYT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right. Reverse: Eagle standing left, head right, holding wreath in beak; before, palm; behind, LI, RY 10. References: Emmett 3806, Dattari 5276 Size: 23mm, 11.9g[/SIZE] [IMG]https://iomegacollectionhome.files.wordpress.com/2019/06/collagemaker_20190611_214303169.jpg[/IMG] [SIZE=3][B]Gallienus, Ruled 253-268 AD BL Tetradrachm, Egypt, Alexandria Struck 261/262 AD[/B] Obverse: AVT K Π ΛIK ΓAΛΛIHNOC CEB, laureate and cuirassed bust right, seen from front, slight drapery on left shoulder. Reverse: Eagle standing left, holding wreath in beak, palm over shoulder, ENATOV to left and L to right (year 9=261/262 AD). References: Emmett 3802, Dattari 5286, Köln 2908[/SIZE] [IMG]https://iomegacollectionhome.files.wordpress.com/2020/04/incollage_20200416_204218115.jpg[/IMG] [SIZE=3][B]Gallienus, Ruled 253-268 AD BL Tetradrachm, Egypt, Alexandria Struck 263/264 AD[/B] Obverse: AVT K Π ΛIK ΓAΛΛIHNOC CЄB, laureate, draped and cuirassed bust right. Reverse: Tyche standing left, holding rudder and cornucopiae; L IA (retrograde) in left field, RY 11. References: Emmett 3836, Dattari 5267 Size: 24mm, 9.69g [I]Notes: Fascinating retrograde date.[/I][/SIZE] [I] [IMG]https://iomegacollectionhome.files.wordpress.com/2020/08/incollage_20200809_191919992-1.jpg[/IMG] [/I][/QUOTE]
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