Post Your Papal States Coins - Reverse Chronological Schedule By Ruler

You've got a nice deep collection for this issuer!

The carlino denomination is interesting, both for the history you point out, and for its persistence.

As far as I can tell, Papal States developed one of the earlier decimal currency systems, the scudo of 100 Baioccos (baiocchi if we use the Italian form of the plural), the baiocco in turn comprised of 5 quattrinos. I think the system of 100 copper baiocchi to a scudo was in place by 1700, maybe even a bit earlier.

But it seems they also maintained a parallel non-decimal set of denominations containing the grossetto and carlino into the 18th century. Numista has the 18th century silver (0.500) carlino valued at 7.5 baiocchi.

Excellent!

Shall I go again? I seem to have more coins from Pius VI than any other rule.

This is a double Giulio (or 0.2 of a Scudo). The reverse is rather worn in the centre but this seems to be an issue with this general type of image with the allegorical "holy mother church" being depicted

The nearest Numista reference I can find is Numista 89416 but it's not a great match as that version shows a date at 6 o'clock or references a date at the end of the obverse legend - while this example doesn't have either. It does have a regnal year which indicates 1783-84. There seem to be different varieties of building types as well (at the allegorical figures left hand) where some have crosses on the top and others don't.

very nice coin @Bacchus2

yes please continue..

Yes, indeed!
I just realized this 1778 half scudo struck in Bologna was also from Pius VI's reign.
Nothing exciting about the obverse which is similar to several of Bacchus2's silver from this reign, but the reverse has a nice image of Saint Petronius, Bologna's patron, up in the clouds, protecting the city as represented by a small model at lower left.

That's a fantastic reverse image - one that I hadn't really noticed before. I like the artistry of the two shields at the base of the design too. One seems to have a cardinals hat (galero) and one the triple tiara surmounting the shields.

Also, apparently the combination AE diphthong lettering can be quite common in liturgical works - but I don't think I've noticed it before on Pius VI coins. Another interesting feature.

I will check to see what I can find on those. My guess is that one of them is the arms of the papal legate to Bologna. I think these posts were governors or administrators in the farthest flung provinces.

Those towers are iconic and dominate the central square in modern-day Bologna. I went up the Asinelli Tower (the taller, less leaning one) a decade ago and took this picture of an old photo in the small museum area. You can see the same two towers as are on your coin, but with the addition of some additional ones. According to the interwebs, the best estimate is that there were upwards of 100 towers in Bologna, although not all existed at the same time.