Probably a Roman Republic coin. World coin is a 1770 8 Real from Peru , and my oldest US coin is an 1806 Draped Bust Half . Sorry I didn't crop the denarius , it's on a washcloth not a shag carpet .
480-457 BC ATTICA, AEGINA AR Stater OBVERSE: Sea-turtle (T-backed); head in profile REVERSE: Large square incuse with skew pattern Struck at Aegina, 480-457BC 11.96g, 20mm SNG Cop 507
The definition of what constitutes a coin is somewhat vague, but I'd argue that my earliest is this striated hekte, from ~650 BC: Slightly earlier issues have no design whatsoever on the obverse and that begins to deviate from the conventional interpretation of a "coin". It has also been argued that the first "official" coin is the Lydian trite, being issued officially by a government with a set exchange value:
My oldest, probably slightly less old than the Lydian lion posted by AJ: KINGS OF LYDIA, temp. Ardys - Alyattes 630-564 BCE Electrum trite, 4.8 gm, 13.4 mm. Sardes mint. Obv: head of roaring lion right, sun with four rays on forehead Rev: two incuse square punches Ref: Weidauer Group XV, 64; BMC 2
Persian Empire; Cilicia Tarsos; BC 380-374 AR Stater, 23mm/10.3g OBV: Head of Arethusa, Patron naiad (water nymph) of Syracuse, facing slightly left wearing single pendant earrings and necklace REV: Bearded head Left of Pharnabazos (or Ares), Persian military commander wearing crested helmet with raised ear flap. (Price 2949)
Mine are (of course) Constantine the Great, one minted in Rome and another in Siscia: Well I am Byzantine collector, and when Byzantine era exactly begins is matter of discussion. However the best explanation one can give is that it was a gradual process beginning from Diocletian (around 290) until Leo III the Isaurian(around 720). I have decided that it started with Constantine the Great due to the foundation of Constantinople, which virtually made the Eastern Roman part survived for further 1000 years more than the Western part. - It was first until the Sack of Constantinople in 1204 accompanied with the invention of canon that sealed the death of Byzantine Empire.
My three (because all three are about the same period and I don't want to favor any) oldest are very modest in comparison to the wonderful coins we've seen above. The first one unfortunately, shows it's age... Syracuse Uncia c. 420 BC Head of Arethusa right, SYPA in right field Octopus, globe above 2.55 gr, 14 mm Ref : Sear #1184, SNG ANS 376 ff Thessaly, Larissa, AE 20-22 400-344 BC Head of the nymph Larissa facing ΛΑΡΙ - Σ - ΑΙΩΝ parly retrograde, Horse trotting right 8.88 gr Ref : Sear # 2131 Troas, Cebren, AE8 c. 400-350 BC Head of apollo right Ram's head right 1.1 gr, 8 mm Ref : Sear #4071 Q
Sweet coins, Q => I have examples of all three of 'em (we must have fairly similar tastes, eh?) => animals
I have two slightly different versions of the same coin that are my oldest: Iona-Miletos Late 6th-Early 5th Century BCE AR Obol (AR Twelfth) 9.5mm, 1.22g OBV: Forepart of Lion l, head reverted REV: Stellate Pattern within incuse square SNG Kayhan 4627; Sear Vol2 3533
Iona-Miletos Late 6th-Early 5th Century BCE AR Obol (AR Twelfth) 10mm, 1.2g OBV: Forepart of Lion l, head reverted REV: Stellate Pattern within incuse square SNG Kayhan 476-482; Sear Vol2 3533
this may be my oldest coin.... Ionia, Miletos, Late 6th- early 4th century BC. 1/12th Stater (1.2 gm, 10.5mm). Obv.: Forepart of lion left with head reverted right. Rev.: Starlike floral design in square incuse. SNG Helsinki II 285. hey, we match aleg!
I think ours are ROARING at each other!!! Lefties and Righties!!! Between us, we have a 4th of a Stater! That could buy some beers...