My rarest ruler by ERIC: Aelia Zenonis. Augusta, AD 475-476. Æ (11mm, 0.75 g, 6h). Constantinople mint. Struck under Basiliscus, AD 476. Pearl-diademed and draped bust right / Zenonis monogram within wreath. RIC X 1018; LRBC 2287 corr. (monogram). My rarest ruler ever (provincial): AEOLIS, Aegae. Britannicus. AD 41-55. Æ (18mm, 3.18 g, 12h). Chaleos, magistrate. Struck circa AD 43-48. Bare head right / Jupiter standing left, holding eagle and scepter. RPC I 2431.
In case you are late to this thread, be aware there are two different rarity lists, one for Roman imperial coins here: http://augustuscoins.com/ed/catalogs/Roman_Ruler_RarityModified2.pdf If you have a provincial coin of someone rare on that list you can be happy to have that person, but do not quote that rarity number for provincial coins. There is a much different rarity list for Roman provincial coins here: http://augustuscoins.com/ed/catalogs/ProvincialRarityStats.pdf Both were compiled by Ras Suarez and posted by me with his permission. Both of those lists are posted on a page with notes on some books (e.g. SNG Danish and the Seaby volumes on Greek (Carradice and Price), Roman (Burnett), and Roman Provincial (Butcher) coins you might find useful if you have reference works. http://augustuscoins.com/ed/catalogs/notes.html
Couple updates, albeit with some qualifications... This one is PROVINCIAL... #168 And we believe it may be a die match with @Roman Collector (cool) Thrace, Deultum. Tranquillina. Augusta, AD 241-244. Æ 22mm 6.6 gm. Diademed and draped bust right / Hermes standing left, holding purse and caduceus. SNG Bulgaria 1504-8; Youroukova 400; Varbanov 2932. And, I love this Thread by @dougsmit : https://www.cointalk.com/threads/spacefiller-saturninus.312705/ #202 SPACEFILLER for Saturninus: Probus Æ Antoninianus / Emperor receiving Victory from Jupiter Attribution: RIC Vii 922 Antioch Date: 280 AD Obverse: IMP.C.M.AVR.PROBVS.P.F.AVG Radiate bust right Reverse: CLEMENTIA.TEMP/XXI Emperor receiving Victory from Jupiter Size: 22.17mm Weight: 3.75 grams Description: EF Doug stated from an article he cited: "a coin that would serve as a space filler for the emperor Saturninus which we all know will not allow us to complete a set of one per emperor. The article proposes a 4th mint producing coins for Probus in the East and separates these coins from issues of Antioch and Tripolis which they resemble. Further it proposes that this mint was set up to provide coinage needed to support military operations by Probus in the area against a usurper who was Saturninus."
What a fun thread! I would love to see a list like this for Roman republicans. As is, keeping it non provincial here's some of my best/worst: 159: Nigerinian Nigrinian DIVO NIGRINIANO AE Antoninian CONSECRATIO Reverse: Eagle Very rare 150:Laelianus LAELIANUS 269 CE. Antoninianus (19 MM, 2.66 gm). Mint city II (Cologne). Radiate and cuirassed bust right / Victory advancing right, holding palm and wreath. RIC V 9; AGK 1c; Gilljam dies IX/54 147: Manlia Scantila MANLIA SCANTILLA wife of Didius Julianus. Augusta, 193 AD. Æ Sestertius (24.70 gm). Draped bust right / Juno standing left, holding patera and sceptre; to left, peacock standing left, head right. RIC III 18a smallish squared flan,dark green patina, sl grainy, obv portrait is clear!Former FRC(A Fair brought $403, CNG eAuc 12/12)
Great thread @Aethelred and coins all! Although not my rarest it is the one I like best amongst the rarest, it could equally fit under "coin I bought for the portrait and braided hair" thread, or "modern sculpture of mother and child coins" Theodora seems to have moved up in the rarity rankings from 96 to 125, so if I hang onto it a little longer maybe it will be my most rare. AE4. 337-340 AD. Obv: FL MAX THEO-DORAE AVG, bust right wearing plain mantle and necklace, hair elaborately dressed with a plait encircling her head Rev: PIETAS-ROMANA, Pietas standing facing, carrying an infant at her breast. If anyone could guess mint based on style - I'd be curious. & I am still having fun with my olloclip macro lens.
My previous best was #151, Basiliscus (in the "very scarce" category), but just today I managed to beat that by 11 points (and move into the "rare" category). Meet my new Libius Severus with Ricimer monogram (issued 461-465, in Rome): From "an old Canadian collection." (I think I may be able to find out more details of the provenance; in any case, I'm sure it's genuine.) Not the greatest monogram – though identifiably Ricimer – but a better portrait than most. (Tagging @ValiantKnight because I know he will enjoy this coin! VK: Darnit, I didn't snag an Odoacer this year, but at least I wasn't skunked! )
This Forum site a very good page with monograms and the emperors who used them: http://www.forumancientcoins.com/numiswiki/view.asp?key=monogram Ricimer is under Libius Severus. I have a Basiliscus