How Far Back Can We Go? Sixth Edition! Ended At 1380 Waiting On 1379

1750 -- Kingdom of Portugal and the Algarves, 400 reis:

And getting back to Britain, here is a really rough 1750 halfpenny of George II.

Ferrara is a small, charming Italian city situated between the more famous cities of Bologna and Venice, near where the Po River empties into the Adriatic Sea. I spent some time there on business trips in the 1980s and 1990s.
In late medieval and Renaissance times, it was ruled by the Este family, who were contemporaries of more famous Italian dynasties like the Visconti and Sforza (Milan), Medici (Florence) and Gonzaga (Mantova), and equally active parons of the arts. From 1471 they reigned as dukes of Ferrara, until the last, Alfonso II died childless, and the duchy became a Papal State (another line of the Este family continued to rule in nearby Modena and Reggio).
From a numismatic viewpoint, there is first ducal coinage from the late 13th century until 1598, including some spectacular (and pricey!) large silver of the later dukes, and then typical Papal states coins starting in 1598. The last coins minted there were issued under Pope Benedict XIV, between 1740 and 1751.
As no coins were minted in the name of a Polish king during the 1740s, I have been working on filling in some of these dates with Ferrara coppers.
Here is a 1/2 baiocco (= 1/200 scudo) dated as regnal year X (August 1749-August 1750)

Another schilling from Hamburg (1750 AD):

A grotty, worn and porous British 1749 farthing:

I think you waited just so you could say that

1749 Brabant 1/2 Ducaton, Antwerp mint (another recent auction win, photos of auction house,as the coin is intransit).
A younger portrait of Maria Teresa than her more famous one. Maybe we will see a still younger one in copper in a few days?

I don't think we said much about her amidst the parade of 1780s thalers. She would be the only female leader of the Hapsburg empire, and despite being the only child of Charles VI , was not raised with an education that would have prepared her for the throne. Her accession on his death in 1740 triggered the war of the Austrian Succession, as Prussia and Bavaria contested her right to rule, and seized Hapsburg territory (notably Silesia). The dust only settled when Charles of Bavaria died paving the way for M-T's husband, Francis of Lorraine, to join her as emperor Francis I. Subsequent rulers are said to be of the House of Hapsburg-Lorraine
That marriage made an interesting connection in my collection: I collect Duchy of Lorraine and Duchy of Brabant. Francis was the last duke in the House of Lorraine, and since 1482 the Dukes/Duchesses of Brabant have come from the House of Hapsburg.

Frederick might have been mad at having Austria prevent his marriage to the Princess Amelia, sister of Britain's George II. I've read that it was Eugene of Savoy who insisted the Austrian Emperor prevent the marriage. Instead Frederick had a wife chosen for him by Austria, a wife whom he despised.