https://en.uesp.net/wiki/Online:Currency
Regarding lore-prices and ESO currency called Drakes
https://en.uesp.net/wiki/Morrowind:Tax_Record
https://en.uesp.net/wiki/Morrowind:Yngling%27s_Letter
https://en.uesp.net/wiki/Lore:For_My_Gods_and_Emperor
ESO specific: https://esoitem.uesp.net/itemLink.php?&itemid=134882&quality=3 (Gold Drakes, Pristine )
https://esoitem.uesp.net/itemLink.php?&itemid=120026&quality=4 ( Never lack for a packed stack of black market fake drakes )
https://en.uesp.net/wiki/Online:Sadrith_Mora_Tax_Records
https://en.uesp.net/wiki/Online:Vos_Tax_Records
https://en.uesp.net/wiki/Online:Molag_Mar_Tax_Records
https://en.uesp.net/wiki/Lore:Chronicles_of_the_Five_Companions_8
https://en.uesp.net/wiki/Online:Ragged_Hafsa
"Is a gold drake too much to ask from one as noble-looking as you?"
https://en.uesp.net/wiki/Online:Factor_Luluelle%27s_Report
https://en.uesp.net/wiki/Lore:Naryu%27s_Journal/Hew%27s_Bane
https://en.uesp.net/wiki/Lore:Moth_Sister_Terran_Arminus_Answers_Your_Questions
https://en.uesp.net/wiki/Online:Groundskeeper%27s_Letter
https://en.uesp.net/wiki/Online:Outfitter_Hireling
https://en.uesp.net/wiki/Online:Adventurer%27s_Almanac,_2nd_Edition
https://en.uesp.net/wiki/Lore:Razum-dar%27s_Journal,_Chapter_2
https://en.uesp.net/wiki/Online:Curnard%27s_Journal
https://en.uesp.net/wiki/Lore:From_a_Copy_for_the_Archive
https://en.uesp.net/wiki/Online:Delivery_Schedule_and_Manifests Difference between drakes and gold drakes?
https://en.uesp.net/wiki/Online:Captain_Ernele more copper instead of cents or pennies
https://en.uesp.net/wiki/Online:Crafting_Motif_32:_Abah%27s_Watch_Shoulders
copper, as in english saying: "In for a penny, in for a pound"
https://en.uesp.net/wiki/Daggerfall:Theft_from_a_Temple more copper
Septims refs: https://en.uesp.net/wiki/Skyrim:Silda_the_Unseen
https://en.uesp.net/wiki/Skyrim:Braith
https://en.uesp.net/wiki/Skyrim:Edda
https://en.uesp.net/wiki/Oblivion:Biene_Amelion
https://en.uesp.net/wiki/Morrowind:Lorbumol_gro-Aglakh
https://en.uesp.net/wiki/Morrowind:Hrundi
MW Player Journals and Dialoges have plenty of Septims and Drakes occurences
https://en.uesp.net/wiki/Online:Currency_Steward
Gold as gold: https://en.uesp.net/wiki/Redguard:J%27ffer
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Daedric letters on File:ON-item-Coins (Drakes).jpg say "GOLD"
Random NPC dialogue in Bruma in Oblivion has them say "I overheard a guard mention the Countess is looking for a piece to add to her collection of Akaviri artifacts. Our taxpayer's drakes at work.." Similar to "taxpayer's dollars".
Dialoges of https://en.uesp.net/wiki/Online:Adhazabi_Aba-daro contain various ESO currencies