whats the oldest coin you have?

Bronze coin of Alexander the Great, minted postumously between 325-310 BC.

1677 Bawbee.

For some of these I have illustration, for others not (haven't photographed everything yet).

The oldest coin in my main, British, collection is a penny of Edward I, 1272 -- 1307




The oldest coin in my "Russian" collection is a dirham from Bukhara (now a part of Uzbekistan, former Soviet republic), 775-785 AD




My oldest (proper) Russian coin is a denga of Ivan the Terrible, circa 1550.


My oldest European, and oldest overall, is a Roman AS of Trajan, AD 115 -- 116, a gift from Scooby (I guess he regifted it ).


My oldest Asian is an Indian coin from the 5th century (I still need to research and ID it)


My oldest African is a pysa of Zanzibar, dated AH 1299 (AD 1881)





My oldest American coin is 2 sous, 1789, from French Guiana. (My oldest US coin is 2 cents 1865)


My oldest Australia/Oceania coin is an Australian shilling of 1910.

Since I collect coins from countries over time.... hmmm... I have ancient coins I don't recognize from Judea and temple period. The oldest recognizable is 253 Roman Coin. More common from 1900's + 1800's + some 1600 - 1700 - 1800.

Silver copeck of Ivan the Terrible (1547-1584 - don't know enough to be able to pin it any closer).
Oldest dated is currently from 1615 - Riga solidus of Sigismund III (of Poland). I've only been seriously collecting for a year or so, so I hope I'll eventually get a dated coin from before 1584, at which point I'd count it as oldest overall even if the copeck was actually older).

And as someone's already listing continents...
Oldest from Europe: both of the above.
Oldest from Asia: 1885 Japanese 5 sen.
Oldest from Africa: 1956 French Algeria 20 francs.
Oldest from North America: 1823? Matron US cent (the date's not quite there, but I feel I can see it if I squint enough; otherwise, 1841 cent).
Oldest from Central America: 1915 Salvador 5 centavos.
Oldest from South America: 1893 Brazil 200 reis.
Oldest from Australia/Oceania: discounting the so-called "Proclamation" 1797 British copper penny (which might or might not have been used in Australia), 1941 Australian sixpence.

Wow! My 1800 Draped Bust Large Cent is a "youngster" compared to some of the aformentioned.